Responses
If you mean like physically fighting then this fits - https://www.mangago.me/read-manga/makitakun_no_koiji_wo_jamasuru_to_shinu/
This one is more like enemies to lovers in workplace competition fight type thing - https://www.mangago.me/read-manga/fake_fact_lips/

Can anybody recommend me a manga/hwa where the Mc and it's love interest fights and when the other one loses they confesses their love?
It can be Straight, BL or GL
I just like this trope!