Microsoft account connected to the wrong minecraft account??

HI! I've had Minecraft for years and I've used a specific account. I have had no issues with the migration of Microsoft and Minecraft and after that happened I was till able to use the account I have bought Minecraft on. But recently I changed the email to my Microsoft account and now when I try to connect to the original account I have Minecraft on it connects to a Xbox account that I assume I used that other email for. Because of this I can't get to the account I've already bought Minecraft on and the only thing I can do is buy it on this other account but I don't want to buy the game again when I already bought it. I reached out to Minecraft help but none of their solutions fit the problem. When I use the Microsoft log in to try and log into the account it just logs me into the whole other account. I don't really know what to do here. I'd love to get my original account back since it has all of the previous worlds I had on it but if that's not possible I understand. I'd still like to have access to play Minecraft but I don't want to have to pay a second time for a game that I paid for years ago. Can you help me out with this so I can play Minecraft with my friends again because I really enjoy the game and would hate to have to abandon it.

:)