i tried checking off as much of the criteria, i hope u find something u life!! the gamer part was hard to find ㅜ_ㅜ
https://www.mangago.zone/read-manga/it_s_difficult_to_love_an_otaku/ (glasses, gamer, manga)
https://www.mangago.zone/read-manga/megane_tokidoki_yankee_kun/ (glasses, manga)
https://www.mangago.zone/read-manga/match_made_in_heaven_by_chance/ (glasses, buff, manhwa)
https://www.mangago.zone/read-manga/chitra/ (glasses, reverse harem, manhwa)
https://www.mangago.zone/read-manga/340_days/ (glasses, manhwa)
https://www.mangago.zone/read-manga/first_love_lasting_hate/ (glasses, manhwa)
https://www.mangago.zone/read-manga/i_only_treat_villains/ (glasses, buff, manhwa)
https://www.mangago.zone/read-manga/the_fairy_legacy/ (glasses, manhwa)
https://www.mangago.zone/read-manga/marielle_clarac_no_konyaku/ (glasses, manga)
https://www.mangago.zone/read-manga/i_found_somebody_to_love/ (glasses, manhwa)
https://www.mangago.zone/read-manga/goodbye_in_law/ (glasses, manhwa)
https://www.mangago.zone/read-manga/3d_kanojo/ (glasses, gamer, manga)
https://www.mangago.zone/read-manga/guard_pass/ (glasses, buff, manhwa)
1. ml with glasses
2. gamer if possible
3. buff!!!
thanksssssss ヾ(❀╹◡╹)ノ~