It appears that i dont have minecraft, even thougt I already buy it

I`ve been playing minecraft since 2017 on pc, and I already migrate my mojang account to a microsoft account. Today when I launch minecraft, it said that I had to change my launcher to the windows one, so I followed all the steps and started the new launcher, but the problem was that it appears that I didnt have minecraft java and I had to buy it.

:)