What's the go-to these days for a non vender android to put on devices? I've got a Samsung SM-T580 (Tab A 2016 model) that I've found myself thinking could be more useful if wiped and Termux installed.
I run #LineageOS on one phone and #PostmarketOS on another and use both.
It all depends on what you want to do. PM is much better for playing with the new, unstable #LinuxMobile hotness, but I only get a 1-2 hours active use battery (though it suspends for ages). Camera is usable, but low quality enough that you won't be sharing pix with friends + family.
Lineage is a pain to flash, with good battery life and access to most apps, but you're essentially still buying into #Android. 🤮