Over Christmas my mom was complaining about her TV and I found a setting to have it start up with the last used input, which meant no more dealing with the smart interface and motion remote. I have an LG as well, but I wasn’t able to find the same setting available, unfortunately. Thought the automatic selection seems to work decently well when I turn on a device.
I have an old Samsung from 2017 that’s dumb. I mainly bought it because it was the size I needed (~40”), smaller than most people these days want.