Can't play on xservers with microsoft minecraft

You may not be able to refund, depending on how long you've played, when you purchased etc but you can definitely try to put a request in

Hi there Ozan GuzelOzan

Hi there Some servers require a certain game verisons to join the servers. Here is how to do a refund process though https://support.xbox.com/en-US/billing/xbox-subscriptions/digital-goods-subscriptions-refund

Hey there, Ozan GuzelOzan!

In order to get a refund, you will need to place a request from Microsoft. You will need to follow the steps provided in the link below.

Request an Xbox digital product refund

You may want to contact support if you want to issue a refund on your game.

Check out this website fir useful information: https://support.xbox.com/en-US/billing/xbox-subscriptions/digital-goods-subscriptions-refund