This one is my fav :)
https://www.mangago.zone/read-manga/a_whirlwind_campus_affair/
I had a whole list dedicated to pink haired fmcs but I deleted it anyways here are some other recs
https://www.mangago.zone/read-manga/seduce_the_villain_s_father/
https://www.mangago.zone/read-manga/preference_for_the_possessor/
https://www.mangago.zone/read-manga/becoming_the_villain_s_family/
https://www.mangago.zone/read-manga/this_is_an_obvious_fraudulent_marriage/
https://www.mangago.zone/read-manga/i_became_the_daughter_in_law_of_the_villain_because_i_m_terminally_ill/
https://www.mangago.zone/read-manga/another_typical_fantasy_romance/
https://www.mangago.zone/read-manga/i_only_came_to_find_my_dad/
https://www.mangago.zone/read-manga/untouchable_lady/
https://www.mangago.zone/read-manga/survive_as_the_hero_s_wife/
https://www.mangago.zone/read-manga/the_villainous_princess_wants_to_live_in_a_cookie_house/
https://www.mangago.zone/read-manga/death_is_the_only_ending_for_the_villainess/
https://www.mangago.zone/read-manga/a_stepmother_s_m_rchen/
https://www.mangago.zone/read-manga/the_pet_of_the_villainess/
https://www.mangago.zone/read-manga/i_thought_it_was_time/
https://www.mangago.zone/read-manga/i_m_being_raised_by_villains/
https://www.mangago.zone/read-manga/my_younger_brother_forces_my_flower_path/
https://www.mangago.zone/read-manga/the_princess_s_double_life/
https://www.mangago.zone/read-manga/tyrant_s_tranquilizer/
https://www.mangago.zone/read-manga/the_precious_sister_of_the_villainous_grand_duke/
https://www.mangago.zone/read-manga/the_empress_wants_to_avoid_the_emperor/
https://www.mangago.zone/read-manga/the_princess_doll_shop/
https://www.mangago.zone/read-manga/i_raised_a_black_dragon/
https://www.mangago.zone/read-manga/an_unseemly_lady_wicked_dragons/
https://www.mangago.zone/read-manga/lotto_princess/
https://www.mangago.zone/read-manga/the_tyrant_s_only_perfumer/
https://www.mangago.zone/read-manga/i_met_the_male_lead_in_prison/
https://www.mangago.zone/read-manga/lord_baby_runs_a_romance_fantasy_with_cash/
https://www.mangago.zone/read-manga/i_will_seduce_the_male_lead_for_my_older_brother/
https://www.mangago.zone/read-manga/i_have_to_be_a_great_villain/
https://www.mangago.zone/read-manga/don_t_get_eaten_by_the_incubus/
https://www.mangago.zone/read-manga/the_story_about_you_x_me/
https://www.mangago.zone/read-manga/green_apple_paradise/
https://www.mangago.zone/read-manga/universe_s_most_jealous_goddess/
These are all I could think of
Shoujo manhuas that have pink haired characters they don't necessarily have to be fmcs even if they're js a side its okay w me i js need them to be pink