My account got hacked and when I try to log in it says account doesn't exist

My main problem is that when I try to log in, is it says that account doesn't exist. But my account exist as I can see it in the friends list of my other account.

Why can't I log into my xbox account? Every time I log in it says my account doesn't exist...I tried my other Microsoft accounts and its still saying the same thing your account doesn't exist. I don't recall deleting my account or confirming to have it
be taken down.

my account is hacked by a rambler.ru account and i think they changed my email, it says "That Microsoft account doesn't exist. Enter a different account or get a new one"

Hi, I'm saying it dissapeard because i couldn't log in, but got no message about the account being deleted. When i tried to log in, It said that my account just don't exists

i found the account that hacked me, using xbox, problem is that i still can't use my main account to log into minecraft and i need to somehow change it from this hackers account to my account.