I want to include a way to check if a username is avaliable for my game. I tried using the built in authentication system, but when using it on mobile it keeps loading without allowing me to sign in. I want to make it so that when a user types a username it checks a firebase databse to see if it is avaliable, and tells the player. I don’t want full authentication just the username.
Please help me i have no idea how to do it 