Lost Microsoft Account - need help reclaiming it

support.xbox.com/.../forgot-microsoft-account-solution Has Info to try recovering the account. If he can verify the Account ownership
with support He should be able to get the Correct account from them Can be contacted at 18004MyXbox or (800) 469-9269

I think the easiest way to find an account which used to be on the Xbox One is using a simple trick. First you'll want to sign in to any other account on the console (create one if needed). Then go to Settings, Remove Accounts (if it isn't already removed,
which in your case it already is), then straight to Family Add....click on the account and when you do it will show the email address very large right there. You may not know the password to complete this process but you'll see the email address clearly which
is the account name.

You may need to contact support directly. There's a guide on how to recover your account here:

https://support.xbox.com/help/account-profile/manage-account/lost-password-solution#recover-your-microsoft-account-online

I usually steal a Wraith from the part before that, squeeze it into the Mammoth, squeeze it back out, and then use it to kill everything until the part where you have to destroy the ship. Another method would be to get a Plasma Pistol and a Sniper (can be
found on the Mammoth). Snipe the gunner, then EMP the Wraith and jump in the gunner seat, the driver will jump out and then you can kill him easily.

kill as many of the enemies/turrets as you can before taking out the wraith, preferably from the far cliff on the other side of the mounted turret. snipe the grunt in the turret and the jackal with the beam rifle on the grav lift platform.

best way is to steal the wraith at the beginning of the level as was mentioned. you can splatter the enemies inside the bubble shields with it, then get out and throw a grenade in to destroy the shield generators.

to take out the wraiths on foot, best bet is a charged plasma pistol to disable it then run up and press x to board it and either stick it with a plasma or melee to destroy it.

on solo Legendary the strategy I used to complete almost every level was picking off the enemies from cover one by one. don't try to rush in bc even the grunts have fuel rod cannons or needlers and can take you down easy.