I don’t have anything to say that everyone else hasn’t so I’ll just wish you good luck and hope you have an enjoyable experience

Don’t quote me on this but I’m quite sure you can run Linux on Samsung phones with termux/prootdistro

Edit: I specifically mentioned Samsung because of their Dex mode but it seems plenty of other phones also allow video out via usb these days. I can’t say for sure they work well with Linux but I do know it’s doable on Samsung.

Ecosia