google login incognito

I want to open an incognito tab if I play on someone elses device. For instance when i play with friends and want to use their laptop.

I want this because if you login with google on normal chrome tab, it saves the password on the whole device, and now you can acces all my google apps, and if im not carefull to delete my login when we stop playing, the other person can acces my email or other apps forever. A poor security flaw imo. Anyway, I fix this by logging in on an incognito tab. It works good with other websites, and i dont risk that someone else logs in afterwards. As soon as i close the incognito tab, my login is ''deleted''.

When i try this with geoguessr i get a message saying: Something went wrong.