I've backed up all my important things and emptied the account too, unfortunately it's probably too late as he may have downloaded all anyway as he used the Goo

I've backed up all my important things and emptied the account too, unfortunately it's probably too late as he may have downloaded all anyway as he used the Google takeout to get backup data. I'm not in that account at all now, after I backed up and emptied it, I factory reset my computer.