What tv can't you just type a channel number in, or press an input button to switch inputs?
If you don't plug it into the internet it's not going to be a smart tv
If you don't plug it into the internet it's not going to be a smart tv
Could replace the remote with a Old Person Remote perhaps.
Just looked for a random tv, it has a normal remote to me https://ao.com/product/vel50fo01uk-veltech-tv-black-66496-10... scroll right on the photos