Xbox Series x with keyboard and mouse is that possible?

Would be cool if someone could say whether this is possible and how and whether you need a special keyboard in mouse thanks in advance

You can use almost all Xbox One or Xbox Series games with conventional USB keyboards.

Hope I could help.

Is it also worth it?

Yes, absolutely.

Many games work very well. Some less so. But that depends entirely on the game developer.

Yes I know that, thank you