My Microsoft Sign in feature on my PS4 isn't working (username is the same on PS4 as is here: k1t__k4ttt)

So I have uninstalled and reinstalled minecraft so many times to try and connect my Microsoft account but it doesn't work. It keeps saying it's connected to someone else's but I haven't connected it to anyone else's I keep uninstalling and reinstalling and it's not helping and I don't know what to do anymore.