I need something warm, innocent, good and calming shoujo, slice of life, school life manga...

Fruits basket
Gakuen no alice

As much as I want to reread them I don’t have the time for it

Ah you've read them already
How about:
Ore-sama teacher
Or
https://www.mangago.zone/read-manga/koi_wa_ameagari_no_you_ni/

Skip and loafers

Kono oto tomare
Faded first love

https://www.mangago.zone/read-manga/oremonogatari/ PEAK
https://www.mangago.zone/read-manga/ohayou_ibarahime/
https://www.mangago.zone/read-manga/neko_to_kiss/
https://www.mangago.zone/read-manga/tsun_ama_na_kareshi/
https://www.mangago.zone/read-manga/telework_yotabanashi/
https://www.mangago.zone/read-manga/okashiratsuki/
https://www.mangago.zone/read-manga/this_love_is_a_traves_tea/
https://www.mangago.zone/read-manga/natsuaki_kun_wa_kyou_mo_kokuhaku_shitai/
https://www.mangago.zone/read-manga/primitive_boyfriend/
https://www.mangago.zone/read-manga/nodame_cantabile/
https://www.mangago.zone/read-manga/gojuu_rokujuu_yorokonde/
https://www.mangago.zone/read-manga/ayashii_iyashi_no_yakumo_san/
https://www.mangago.zone/read-manga/kijima_san_to_yamada_san/
https://www.mangago.zone/read-manga/patissier_san_to_oujo_san/
https://www.mangago.zone/read-manga/no_you_na/
https://www.mangago.zone/read-manga/ookami_no_musume/
https://www.mangago.zone/read-manga/kiyoku_yamashiku_modokashiku/
https://www.mangago.zone/read-manga/kawaii_hito_saitou_ken/
https://www.mangago.zone/read-manga/hananoi_kun_to_koi_no_yamai/
https://www.mangago.zone/read-manga/itou_kun_wa_koi_wo_shiranai/

omgg thank youu, if you have more cliches esp famous x non famous i would love it as well

Yesssss here you go

Sorry, my fat fingers didn’t let me here tho
https://www.mangago.zone/read-manga/koi_wazurai_no_ellie/ (completed)
https://www.mangago.zone/read-manga/kyou_no_kira_kun/ (completed)
https://www.mangago.zone/read-manga/takane_no_ran_san/ (completed)
https://www.mangago.zone/read-manga/high_school_debut/ (completed)
https://www.mangago.zone/read-manga/watashi_ga_motete_dousunda/ (completed)
https://www.mangago.zone/read-manga/miki_san_sukidesu/ (completed)
https://www.mangago.zone/read-manga/himitsu_no_otsukiai_wo_shiteimasu/ (completed)
https://www.mangago.zone/read-manga/karen_ichijou_tempts_him/ (completed)
https://www.mangago.zone/read-manga/mitsunaga_ougo_is_trying_to_control_himself/ (completed)
https://www.mangago.zone/read-manga/haru_matsu_bokura/ (completed)
https://www.mangago.zone/read-manga/raou_kun_notices_me/ (ongoing)
https://www.mangago.zone/read-manga/this_boy_in_class/ (ongoing)
https://www.mangago.zone/read-manga/pink_to_habanero/ (ongoing)
https://www.mangago.zone/read-manga/tonari_no_stella/ (ongoing)
https://www.mangago.zone/read-manga/busu_ni_hanataba_wo/ (ongoing)
https://www.mangago.zone/read-manga/nemuro_kun_wa_kao_ga_ii/ (ongoing)