My Minecraft Java account doesn't appear.

When I open the Minecraft Launcher, I'm getting a message saying that it couldn't verify the products I own. When I go to the Minecraft Java section, it tells me that I don't have any Minecraft profiles, even though on the official Minecraft website my name "Samixlolo" appears, showing that I am registered as a "player." It asks me to create a player name, but when I enter "Samixlolo," it says it's already in use. It's strange and annoying because I don't have any difficulties with Minecraft Bedrock, and the money I paid for the game feels like it's going to waste.

I hope you can help me. I'm looking forward to your response.