This has been an issue I've been trying to solve now for almost a year. About 2.5 years ago I merged the Mojang account my father bought for me around 2014, when I was about 13 or 14. for a year and a half after that, I had no issues running Java Minecraft on the Minecraft Launcher and started up some new worlds, some short term, and a couple long term, plus I joined a server for my first time as well. Around January-March 2021, my account started to have troubles signing in, and after some back and forth, I was able to sign in, but my account showed that I no longer owned Java Minecraft. I checked on my other Microsoft account as well that I had purchased Bedrock edition on (before I realized you could get both for one account), and it showed the same as well, which I expected since I never bought Java for that account. If there's anyone that can help me, please let me know what I can do to get Java back. After all the troubleshooting I've been suggested, my worlds have already been deleted, so I'm already resigned to simply try and get my Minecraft back so I can enjoy the server I had started playing on and maybe start a new world or two with friends.