GL

https://www.mangago.me/read-manga/the_heart_of_the_thorns/ (it's GL, uploader didn't tag it correctly; high schooler loner artist MC x monster axolotl princess FL; age gap? MC is 16 and FL is 260 but she seems physically/mentally to be a teenager)
https://www.mangago.me/read-manga/yuri_yuri_panic/ (high school setting; plain girl MC x beautiful Classmate FL)
https://www.mangago.me/read-manga/watashi_to_kanojo_no_kawaii_koi_no_hajime_kata/ (cute receptionist MC x strict-looking FL who likes cute things)
https://www.mangago.me/read-manga/yuzu_and_rika/ (high school setting; plain MC x beautiful FL)
https://www.mangago.me/read-manga/kono_koi_wa_hoshi_ni_wa_negawanai/ (college setting; childhood best friends to lovers; slow-burn)
https://www.mangago.me/read-manga/yearning_for_a_night_full_of_you/ (high school setting; "delinquent" MC x rich and respectable FL; senpai-kouhai relationship)
https://www.mangago.me/read-manga/love_bullet_1/ (modern-day cupids who matchmake couples; every couple so far has been WLW)
https://www.mangago.me/read-manga/indulging_a_crazy_beauty/ (9th princess MC x general FL; toxic vibes, FL is possessive)
https://www.mangago.me/read-manga/kimi_ga_hoeru_tame_no_uta_wo/ (high school setting; introverted MC with a deep voice x FL who wants to start a group with her)
https://www.mangago.me/read-manga/genjitsu_sekai_real_demo_shiawase_ni_shite_kudasai_ne/ (high schooler MC x transmigrated from an otome game multiple FLs)
https://www.mangago.me/read-manga/dark_mermaid/ (high school setting; introverted MC with a traumatic past x extroverted mermaid FL; depictions of bullying, sexual harassment; slow-burn)
https://www.mangago.me/read-manga/mietemasu_yo_aizawa_san/ (high school setting; MC who can see ghosts x dead idol Classmate FL)
https://www.mangago.me/read-manga/clandestine_affair/ (historical setting - seems to be set in the 1950s?; lonely and neglected wife of a businessman MC x presumably dead ghost FL who haunts MC's mirror and wants to take over her body)

I LITERALLY LOVE U SO MUCH OMG