Just get a "display". See https://youtu.be/-epPf7D8oMk where Jeff Geerling talks about how great a TV his non-TV is. He has an NEC UHD Professional Display M551. He gets to control the software on the embedded Raspberry Pi. It's about $1700 but I think it's worth it.
Product link https://www.sharpnecdisplays.us/products/displays/m551