"because your accessing sensitive info you need to verify your password"

So while im trying to do the phone link thing or logging into minecraft because i was logged out for some reason it just pops up saying (said in title) it keeps giving me some random bibimail thing that no one in my family knows of, nor people that have used it. I use my settings, switch my microsoft account, check microsoft accounts available in settings, its never there the sangmoore blahblahblah is just like imbedded into microsoft yet everywhere i check its just my account never the one i see and when i do the option to forgot password or whatever there's no button available that allows me to switch my account and if i press the back button it does not switch me to the log in tab it just disappears and just repeats i dont know how to fix it