purchased a note 10 need to unlock.

I purchased a Samsung note 10 from ebay. The phone is locked to xfinity. I was an xfinity customer for many years and used the phone on my account.  Now I moved to an area where xfinity does not offer service.  The phone is locked and I can't use it anymore because I am no longer xfinity customer.  Need help have owned the phone for 3 years now.