That's a tough call, then. It really depends on how many and how important those xbox games are to you. Also, how many of them are also available on PS5 would be a factor.

Obviously, you don't want to pay for the same games twice if you can help it. But it couldn't hurt to see if any of them are included in the PS Plus subscription service. Or, if you only have a couple of games that you must have, maybe cheap physical copies are available for PS5. This way, you get access to the exclusives you mentioned and still keep some of the games you already like playing.

If it looks like you'd be buying duplicate games totaling approximately$100, then you may want to consider just buying another Xbox One instead. I wouldn't be surprised if you could find one for $80. I see them for $100 all of the time.

If that's too much and/or you just really like your current library, then get the Series X. It'll make your current games look better and play better. Of course, you'll miss out on the Marvel exclusives you mentioned and the yearly Sony GOTY contenders. But, the Series X is still a great system.