The only one I could think of right now:
https://www.mangago.me/read-manga/tadoru_yubi/
Here’s another one I remembered:
This first one not so much, but I think it needs to be read get a better understanding of the spin-off
https://www.mangago.me/read-manga/yorokobi_wa_hiza_no_ue/
Spin-off
https://www.mangago.me/read-manga/yorokobi_wa_ude_no_naka/
More like mutual unrequited love
https://www.mangago.me/read-manga/3_pun_instant_no_chinmoku/
https://www.mangago.me/read-manga/gakuran_no_nakamade_sawatte_hoshii/
This one is short so the unrequited love part is very very minor (more like an assumption)
https://www.mangago.me/read-manga/suki_nante_iwantoite/
Any suggestions for MC Uke having unrequited love? It can be unrequited love become requited, also unrequited love and found new love, or just forever alone like that