Unable to connect to Microsoft

I can't connect to my Microsoft account because a message tells me that I'm already connected even though I've never been able to connect to a Microsoft account. And it doesn't matter which Microsoft account I want to connect to my Playstation. I've had this (bug) since I got my PS4 and I'm on the PS5 and the same bug is present. I think I'm not the only one in this situation, so I'm asking everyone who knows how to solve this problem to give me a solution. (I want to buy a Realms but without a Microsoft account there's no Realms) thanks in advance.