This whole space has been cursed. You can hack some old Nokias or Androids to run windows on arm and have driver issues. You can use a handheld pc console like the GPD Win and get the LTE addon. But there’s no “this phone is a PC“ offering that is really viable.
I suppose having a Pinephone and running Linux is the best option right now.
I used a lap dock for a while (UPERFECT) which allowed me to plug a device via usb c and it would turn the phone into a basic laptop.
I wish there were serious efforts.