I have an 8 years old OnePlus 5 running Lineage OS 22.2 as a secondary phone alongside my iPhone. Yesterday the phone froze, turned off and refused to go past the Lineage loading screen — where it froze and some weird colourful squares in a single line appeared before turning off. I tried factory resetting it as well from recovery but no success. Today morning I turned it on again and it booted w/o any issues. I think the UFS might have started to show its age — which was used heavily with heavy games, RAW photos, Lightroom processing, continuously running KDEConnect, Syncthing, multiple factory resets and multiple custom ROM installs.

So I was thinking to dedicate it to do something else like an Immich slideshow display, a clock, a controller or something like that. Is there any lighter than LineageOS custom ROM which can allow me to do something like that?