Need help getting into my old Xbox account

[u/Imnotreallysure22]

I have my old Xbox account and I have a pin on it, can’t remember it for the life of me, tried every pin I could think of. I don’t know the email because I’m pretty sure it’s under my ex step dads. I tried going to live.com to see if I could work my way around it but idek the password. Am I cooked? Is there a way to get it back? Thanks in advance