Not all of them confess, but it's obvious they like someone that doesn't like them back at first:
https://www.mangago.zone/read-manga/yuri_yuri_panic/
https://www.mangago.zone/read-manga/yume_to_koi_dewa_tsuriawanai/
https://www.mangago.zone/read-manga/kao_dake_yoi_classmate_ga_yatara_to_guigui_kuru_yuri_no_hanashi/
https://www.mangago.zone/read-manga/summer_trend/
https://www.mangago.zone/read-manga/oni_ure_idol_ga_kyou_mo_watashi_wo_oshitekuru/
https://www.mangago.zone/read-manga/handsome_girl_and_sheltered_girl/
https://www.mangago.zone/read-manga/foxes_always_lie/
https://www.mangago.zone/read-manga/adachi_to_shimamura/
https://www.mangago.zone/read-manga/there_are_always_teachers_who_want_to_ask_out_parents_unofficial/
https://www.mangago.zone/read-manga/other_than_my_friend_s_sister_something_else/
https://www.mangago.zone/read-manga/sherbet_above_the_sea_of_fog/
https://www.mangago.zone/read-manga/the_noble_lady_on_the_edge_of_the_cliff_wants_to_make_the_dark_knight_fall_in_love/
https://www.mangago.zone/read-manga/my_blue_garnet/
https://www.mangago.zone/read-manga/please_bully_me_miss_villainess/
https://www.mangago.zone/read-manga/odoriba_ni_sukaato_ga_naru/
anyone got a yuri where the girl confesses their love x someone who doesnt like them at first but eventually warms up? something like shoujo protagonist x rival-san or wataoshi please. i never realized just how much i actually like this trope and im wondering if theres more like this but yuri. Thanks!