Minecraft is buggy?

I made a stream on YouTube yesterday and suddenly minecraft logged me out with the message Not authenticated with Minecraft.net and someone wrote in my livestream: their Minecraft account was confiscated because I thought nothing of it and wanted to log in again but that was not possible. Then I logged on to Minecraft.net that didn't work either, I reset my password and tried a new password. That was also not possible when I press log on nothing comes no error message and I entered everything correctly. I can no longer log in to Minecraft launcher. On my cell phone I can log in to Minecraft.net and I can also log in with my account details using the ChatCraft app. That means my login data works and my account but why is it not on my PC? Can someone help me?

Let your antivirus run through, surely you have caught a virus.

Yes, yesterday someone hacked my PC, I will reinsert it now because everything is deleted and full of data

Congratulations on so much stupidity…

XD