So when I tried play Minecraft after some time it asked me to set a nickname before playing. Which is weird because I've had the game for more than 5 years... I litterally lost my whole account.
Might be a bug because I have the game pass. My launcher keeps telling me to buy the game and says its included the game pass.

On the left is my original account and on the right the weird one wich is my "new" one.