never ever in your life register on other websites via other services
its a best way to expose yourself
better create from scratch register page
that was probably someone there
i thought everything is good but well
and then i just deactivated account and set it on deleting
now you have to wait for 1 month and pray nothing happens so your facebook gets deleted
after 2 months try to login again and see if its still active or not
either way always use 2FA and fresh register