when I click add account for this mod it goes through the process of logging in then it says "loading... logging into Microsoft" it stays on that screen forever it does not proceed past that point.

Try updating to the latest version and see if it changes anything

it isnt my modpack so i not sure im can do that

What version of the mod are you using? Also could you post your log file?

i am using the PokeClash Cobblemon modpack and the version is oauth-1.1.14-1.19.2.jar