Minecraft for Windows 10 Will not leave BETA

I joined the insider hub to see the RTX edition of Minecraft. I have since left the insider hub. opted out over five times and uninstalled and reinstalled Minecraft over and over again. No matter how many times I have tried and also waited over 24 hours the game is still putting me into Beta 1.15 edition. I can not join any friends because they all are on 1.14.60 version xbox and am not getting help from anywhere!!! Please HELP!!!!!!!!