Dell latitude 5285 is a very robust tablet, its old af but has an x86 intel cpu (i5 or i7 7th gen, rather slow, but fast enough for office and yt) and its easily repaireable (screws on the back) so new battery is no problem.

Refurbished they are sometimes available for ~200€ in germany

Only real issue i found was: volume buttons only work in x11 not in wayland

Volla phone has unlocked bootloader and ships with android or linux, some even have nativ dualboot

https://volla.online/