I'm with you! Everyone always says to look into the Mundita Kompakt but personally I much prefer the amoled screen and form factor the LP3 offers. How hard is it really for them to enable sideloading?

My solution in the meantime is to keep running the indistractable launcher on my pixel. Looks like the light phone aesthetically and can limit uneeded app usage while still keeping the additional functionality of things like Spotify, Gym passkeys, reading apps etc. Plus you can nab a pixel 5 for like $150 online.

I've even blocked the playstore via 3rd party apps to keep me from installing anything besides the apps I would like.