Android texts "Trouble Sending" error

I've been an Xfinity Mobile customer for years with a Samsung S22 for at least a year. Over the past few months, my texts get "stuck" when I try to send, and then I get "trouble sending" error. The options for resolving the error are "retry" or "delete". When I retry, the recipient gets the same text twice (or more) depending on how many retries it takes before the text goes through. I've tried restarting the phone,  resetting the network, clearing message cache, uninstalling apps to free up storage, checked for software updates, etc. Nothing has worked. We have several other phones on our Xfinity plan, and all of the iPhones are working but the other Android is having similar issues. Help!!