Depends on the context. Do you want to manage two accounts or discard your old account and make a new one. Either way the easiest would be to make another google account
Logout from both your Google acct, and your in-game Kabam account.Then at login screen in-game, you would Create a new acct (aka, another new Kabam ID). Have to use a new email address and pswd, so if you don’t already have another unused email acct you’ll have to make one (free gmail, hotmail, etc).Then in-game you just switch back-n-forth by logout/login to the different email accts (aka, Kabam ID's).