email finding on xbox

hi, this is quite a long story, so my family have shared 1 big account on our Xbox one since we got it 2 years ago roughly and recently have had some trouble as a pop-up message kept on coming up (cannot recall what it said exactly, something about having
trouble saving data to cloud or something) and it told us to reset the Xbox to fix it. Anyway, it gave us an option to either cancel (ignore it) or to go to settings we originally were ignoring it but it kept coming up every 5 seconds so we went to settings
and we reset the Xbox making sure to click keep my games and apps as we did so. We tried getting our accounts back by re-inputting our emails it remembered our secondary account and its progress but when we put in our main account email and we instead got
another one of our side accounts which we used on a completely separate device. So we kept trying all of the other emails we have ever owned and it still hasn't retraced the account. We have tried everything on the internet we could find and it doesn't seem
to have worked. I'm not sure how this works but if it helps the account gamer tag was Alphalearner41 so if you could help us track down the email we used to set the account up that would be a lifesaver, Thanks.

:)