I use my monitors with DP 1.4 for general computing and the TV for media and gaming. I HATE using Windows but forced too for now for HDR. I use an offline Ventoy instance of Windows. I will change to QEMU and dedicated video card for Windows once I get another video card
In America, some carriers disable hotspot on the devices they sell and hold you hostage. There are many ways around this. The best way is to use OEM non carrier phones. Other options include pdanet and several other apps designed to bypass the carrier software locks. My graphene os hotspot works perfectly no matter what carrier I use
Edit: Oh, and you can forget it on iphones. Apple loves sucking carriers dicks and fucking you all over. They go out of their way to ensure the carriers are robbing you before allowing hotspot use