My ability to play Minecraft Java Edition was removed.

I tried to log into my Mojang account on the Minecraft launcher; however, it said that I needed to migrate to a Microsoft account. I followed the directions to do so, but it said that I already had a Microsoft account because my Microsoft account was under the same E-mail. I continued to follow the directions and it said that it had upgraded my account; however, my name had been changed to my Xbox account. Not wanting this, I renamed myself, but when I went back to the launcher, it said that I had not purchased the Java edition of Minecraft, and I can only play the demo.