Controlling a modern TV without the remote isn't easy, and that also holds true for LG TVs. Most TVs these days don't have many physical controls, and are operated entirely using the remote. That makes sense, given the myriad of controls users need to access. The old days of buttons just for power, changing channels, and adjusting volume are gone. Users now have to navigate a smart TV interface, which makes the use of a remote essential.

https://screenrant.com/lg-tv-turn-on-control-without-remote-how/