Hey good news for some on Apple TV. With latest TVOS15, it appears Apple added additional learning functionality for use with old fashion IR remotes!
They added the ability to learn the TV/HOME button @Fofer lol
Some of us went through quite a journey to get that working about 6 month ago, including learning a special code from a channel master remote.
Anyway, even though I had already solved this issue for me I had to try the new functionality built into TVOS15.
I can verify I was successful in learning my old Samsung TV remote , and using that to even get the app switcher and control panel working (infamous TV/HOME button and double click)
I haven’t played around with this, but there appears to be the ability to learn additional transport controls. I don’t even remember if this was in TVOS 14 or not TBH.