Dunno how to search lists but maybe I can give you some recs?
https://www.mangago.zone/read-manga/the_nameless_flower/ (Hugeeee groveling arc, full of angst but trust the process!)
https://www.mangago.zone/read-manga/this_time_i_will_definitely_be_happy/ (MC believes ML won't come back for her, he does)
https://www.mangago.zone/read-manga/hayaku_shitai_futari/ (Great shoujo! Super cute)
https://www.mangago.zone/read-manga/psycho_young_dream/ (Yandere kind of chasing arc, psychological so I don't know if you'll like it, huge plot twist though)
https://www.mangago.zone/read-manga/to_be_or_not_to_be/ (good chasing arc! ML chases MC, bit of angst but not in the relationship itself, green flag)
https://www.mangago.zone/read-manga/after_i_left_you/ (Starts off with the regret arc already, not the best to me but still pretty good)
https://www.mangago.zone/read-manga/midnight_dweller/ (Chasing arc is soooo satisfying, wouldn't say gren flag though..)
https://www.mangago.zone/read-manga/drunk_in_love/ (a ton of dog blood, maybe not for everyone)
I wanna find a list of stories with real good chase and/ or regret arcs but I don’t know how to find a list like that, anyone got any idea how or any recommendations? I’m fine with BL, GL and straight romance so any good recs are welcome (⌒▽⌒)