I’m looking for a yaoi manga with basketball and one with baseball. Or any other sport! Thanks!

Apologise for the half assed reply but you can sort out manga with sports genre in the genre/advanced search.
Do check out individual tags for the sports you like and check out these lists...baseball and basketball.
These lists contain both yaoi and non-yaoi but mostly BL.
(P.s I apologise to the mods for linking to another website. Please remove this post if deemed necessary.)