I asked a similar question to this before.... Has anyone used Ubuntu Touch to drive their phone? I believe if you plug the phone into a monitor, you get a desktop interface as well. Home | Ubuntu Touch
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It also looks like they have some compatibility with newer phones https://devices.ubuntu-touch.io/
For example: The google pixel 3a is listed as stable with the only things I see not working are: wireless external monitor
and volume control in calls
Listed a NOT compatible: It looks like they are actively working to get the Galaxy S10 suite: https://devices.ubuntu-touch.io/device/beyondxlte/
I tested it years ago with the Nexus 10 tablet.