The option(s) other commenters gave are great! But just to give you more options, I'll give you a few additional ideas.
- KDE Connect: You can still use a normal desktop (preferably KDE or Gnome), set your display scale to 150+%, and then use your phone remotely to control the cursor, media playback, and more.
- Bazzite: often used to replace SteamOS, it also boots into Steam big picture mode by default, where you can set applications in the start menu. It has a nice console-like interface, and you don't have to maintain anything, e.g. updating. It also supports Waydroid and webapps by default.
- An old laptop or mini-PC with Bluefin or Aurora. They are basically like Bazzite, but without gaming stuff. You can set the display scale to 200% and enjoy a worry-free experience. Optionally, you can install Phosh or Plasma Mobile on top, which is made for mobile devices.