I got THIS REMOTE for less than $10 for my parents, to replace the Harmony 650 that was too complicated for them. Just program it to do what you want.
But we already know that solutions aren't the purpose here.
The thing is, I don't see a question anywhere.
I don't see any interest in finding a solution.
To throw it all away and get a soundbar... well... maybe that is the best thing for you to do.