Forgot password and lost authentication

I wanted to go and play overwatch 2 but i need to add a phone number to play overwatch 2 so i tried to add my phone number and it said it is in use in another account so i wanted to log into that account and remove it so i can add it to my new account but i forgot the password and don’t have Authenticator so what i do. I no matter what i do i cant log in

Im so frustrated i want my account