There is zero reason to buy a 1080p television anymore. 1080p content looks as good or better on any decent 4K screen. Personally I find that most of the games I play on Deck are fairly demanding, so anything running at less than 1080p60 is going to look pretty terrible in any TV. YMMV.
If you can afford the games just buy a switch. Emulating Switch games still kinda sucks, at least the newer higher end ones. People always rush in here to argue otherwise but it does. The only thing is if you can’t afford to buy games then it’s your only way most likely. If that’s the case enjoy your shader compilation stutter I guess. It’s better than nothing.
You’re out of your depth, but props for getting in there. This is nearly forwards from grandma level. Good luck dude lol.