I'm trying to find Gl manga to read but they're all high school ones. Recommendation of ad...

https://www.mangago.zone/read-manga/after_the_curtain_call/

https://www.mangago.zone/read-manga/getting_to_know_grace/

https://www.mangago.zone/read-manga/unrequited_love_skill/

https://www.mangago.zone/read-manga/the_girlfriend_project/

https://www.mangago.zone/read-manga/pulse_ratana_satis/

https://www.mangago.zone/read-manga/love_thy_neighbor_2/

https://www.mangago.zone/read-manga/half/

https://www.mangago.zone/read-manga/gentle_flutters/

https://www.mangago.zone/read-manga/only_need_to_love_once/

https://www.mangago.zone/read-manga/finding_assistant_manager_kim/

College setting:
https://www.mangago.zone/read-manga/love_gives_me_superpowers/ (manhua; story starts in high school but moves into college early on)
https://www.mangago.zone/read-manga/i_want_a_girlfriend/ (manhwa)
https://www.mangago.zone/read-manga/kono_koi_wa_hoshi_ni_wa_negawanai/ (manga)
https://www.mangago.zone/read-manga/foxes_always_lie/ (manhua)
https://www.mangago.zone/read-manga/unnie_i_like_you/ (manhwa)
https://www.mangago.zone/read-manga/listening_to_the_stars_bbl_scans/ (manhua)
https://www.mangago.zone/read-manga/yamada_to_kase_san/ (manga; SEQUEL TO: https://www.mangago.zone/read-manga/asagao_to_kase_san/ - the prequel is set in high school, though)
https://www.mangago.zone/read-manga/all_s_nice/ (manhwa)
https://www.mangago.zone/read-manga/my_princess_charming/ (manhwa)
https://www.mangago.zone/read-manga/handsome_girl_and_sheltered_girl/ (manga)
https://www.mangago.zone/read-manga/blooming_sequence/ (manhwa)
https://www.mangago.zone/read-manga/so_do_you_wanna_go_out_or/ (manga)
https://www.mangago.zone/read-manga/dallaeya/ (manhwa)

Office setting:
https://www.mangago.zone/read-manga/gap_pink_theory/ (Thai coloured comic)
https://www.mangago.zone/read-manga/watashi_to_kanojo_no_kawaii_koi_no_hajime_kata/ (manga)
https://www.mangago.zone/read-manga/teiji_ni_agaretara/ (manga)
https://www.mangago.zone/read-manga/curves_of_her_and_me/ (manhwa)
https://www.mangago.zone/read-manga/the_sea_painted_by_the_moonlight/ (manhwa)
https://www.mangago.zone/read-manga/contract_worker_and_career_woman/ (manga)
https://www.mangago.zone/read-manga/program_me/ (manhwa)
https://www.mangago.zone/read-manga/crescent_moon_and_doughnuts/ (manga)
https://www.mangago.zone/read-manga/still_sick/ (manga)
https://www.mangago.zone/read-manga/ayaka_chan_wa_hiroko_senpai_wo_otoshitai/ (manha)

Other stories featuring women, not teenagers:
https://www.mangago.zone/read-manga/slender_waist/ (manhua)
https://www.mangago.zone/read-manga/please_pick_my_love_too/ (manhwa)
https://www.mangago.zone/read-manga/kiss_me_in_the_dark_of_night/ (manhua)
https://www.mangago.zone/read-manga/please_teach_me_sunbae_nim/ (manhwa)
https://www.mangago.zone/read-manga/fall/ (manhwa)
https://www.mangago.zone/read-manga/sachi_to_yuuka/ (manga)
https://www.mangago.zone/read-manga/officer_you_can_no_longer_hide_your_tail/ (manhua)
https://www.mangago.zone/read-manga/threads_of_me_and_you/ (manga)
https://www.mangago.zone/read-manga/today_we_continue_our_lives_together_under_the_same_roof/ (manga)
https://www.mangago.zone/read-manga/wicked_spot/ (manga)
https://www.mangago.zone/read-manga/indulging_a_crazy_beauty/ (manhua)
https://www.mangago.zone/read-manga/private_photos/ (manhua)
https://www.mangago.zone/read-manga/summer_trend/ (manhua)
https://www.mangago.zone/read-manga/lemon_pie_night/ (manhwa)
https://www.mangago.zone/read-manga/oni_ure_idol_ga_kyou_mo_watashi_wo_oshitekuru/ (manga)
https://www.mangago.zone/read-manga/there_are_always_teachers_who_want_to_ask_out_parents_unofficial/ (manhua)
https://www.mangago.zone/read-manga/trash_flower/ (manhwa)
https://www.mangago.zone/read-manga/koharu_to_minato_watashi_no_partner_wa_onna_no_ko/ (manga)
https://www.mangago.zone/read-manga/the_gale_kisses_the_moonlight/ (manhua)
https://www.mangago.zone/read-manga/my_ex_girlfriend_became_my_boss/ (manhua)
https://www.mangago.zone/read-manga/muryoku_seijo_to_munou_oujo/ (manga)
https://www.mangago.zone/read-manga/other_than_my_friend_s_sister_something_else/ (manhwa)
https://www.mangago.zone/read-manga/drunken_my_boss/ (manhwa)
https://www.mangago.zone/read-manga/sherbet_above_the_sea_of_fog/ (manhwa)
https://www.mangago.zone/read-manga/the_noble_lady_on_the_edge_of_the_cliff_wants_to_make_the_dark_knight_fall_in_love/ (manga)
https://www.mangago.zone/read-manga/my_blue_garnet/ (manga)
https://www.mangago.zone/read-manga/twinstar_cyclone_runaway/ (manga)
https://www.mangago.zone/read-manga/tsumetakute_yawaraka/ (manga)
https://www.mangago.zone/read-manga/bai_lijin_among_mortals/ (manhua)
https://www.mangago.zone/read-manga/to_whom_the_deer_falls/ (manhua)
https://www.mangago.zone/read-manga/miss_forensics/ (manhua)
https://www.mangago.zone/read-manga/unaware_his_majesty_is_a_girl/ (manhua)
https://www.mangago.zone/read-manga/love_thy_neighbor_2/ (manhwa)
https://www.mangago.zone/read-manga/the_song_that_transcends_this_world/ (manhua)
https://www.mangago.zone/read-manga/keep_an_eye_on_you/ (manhua)
https://www.mangago.zone/read-manga/hanamonogatari/ (manga)
https://www.mangago.zone/read-manga/fall_in_love_with_the_empress_zephyr_scans/ (manhua)
https://www.mangago.zone/read-manga/tsuki_to_suppin/ (manga)
https://www.mangago.zone/read-manga/swallow_tail/ (manhwa)
https://www.mangago.zone/read-manga/onna_tomodachi_to_kekkon_shitemita/ (manga)
https://www.mangago.zone/read-manga/bocchi_kaibutsu_to_moumoku_shoujo/ (manga)
https://www.mangago.zone/read-manga/cheerful_amnesia/ (manga)
https://www.mangago.zone/read-manga/fusoroi_no_renri/ (manga)
https://www.mangago.zone/read-manga/clandestine_affair/ (manhua)

Let me comment so that i xan always come back

https://www.mangago.zone/read-manga/pan_focus/

Hey, I don't know if you've already read them, but here's a small recommendation of some I really enjoyed (mature ones) :
- Pulse (this author is incredible in both style and stories)
- On a leash (may seem strange at first with the animalistic theme, but it's really worth it)
- What does the fox say (a long mature one...)
- Soul drifter (same author as Pulse, sci-fi but really good too)
- Best Friends (wasn't used to the alpha/omega genre, but surprisingly good)
- Marie and Alex (if you want a short and very mature one )
- Sadistic Beauty: Side Story (funny and smuty one)
- Hate Me (it's a high school one BUT it's short and pleasant)
- The Love Doctor (really good one)
- Moonlight garden (it's gold)
- Vengeance (mystery, really good)
- Her ShimCheong (historical one)

This one is not an adult one, I admit BUT it's really wholesome and the subject is original (music taste is chef's kiss) : The Guy She Was Interested in Wasn't a Guy At All

I add this one even though I didn't like it, some people do, so... : Lilith (Sirius) 1 and 2 (BDSM, very toxic relationships)

Hope you've found it useful !