WHO DESGIN THIS STUPID LOG IN PROCESS

I have a fking account literally just same name and nothing changed.how could i should create the totally same accout and it told me i didint buy this shit.i had to log in my google account and create a microsoft account and then log in the google account one more time to clarify and go back to  microsoft account and this shitty launcher taught me yeah same name same shit actually u have the account. i just didnt play this game for an year and update this shit.why i should do this stupid process???