Signed into my old account but made a new one?

Hi, I hope you're doing great out there. I am an Independent advisor and I am here to help you in regard to your concern.

This may mean that you're signed in under the wrong Microsoft account, Kim. Our progress is linked to our account itself which means that to fix this issue you may need to check all Microsoft accounts that you own, Kim.

I can't sign out either, I signed in on my xbox 360 before I had an Xbox one, and once I got xbox one, I wanted to stream and I made a new twitch account to match my YouTube channel name and because I have long since forgotten the password of my old one,
but when I got twitch on Xbox one and tried to sign in, I was already somehow signed in on my old one and it wouldn't let me sign out

Well, no, because the Xbox account didn't exist until I made it. I could have used this email as the alias for my old account had I not mistakenly signed up for a new Xbox account with it. I made the Xbox account, so why can't I delete it from existence, and then use this email as the alias for my old Xbox account?

From the sounds of it you created a new account for Live instead of promoting your old one.

You promote offline accounts by signing in to it, pressing the guide button (the big silver one) and then choosing the Join Xbox Live option.

If your new account is automatically signing in you can access the old one by again pressing the guide button and pressing X to sign out. You'll now see the option to Sign In and how many profiles there are on your console. Select that option and you should
be able to access your old account again and promote it to Live access if you wish.

All saves are locked to the profile they were made by, so using your old account is the only way to access that progress.

Btw, the account that this forum was made on is my old one.. I want to be able to get on my new one on the website