I use a 4 year old Xiaomi phone that cost around $150, shipped with Android 6, and stopped receiving updates after 7. LineageOS and PixelExperience are really e

I use a 4 year old Xiaomi phone that cost around $150, shipped with Android 6, and stopped receiving updates after 7. LineageOS and PixelExperience are really easy to flash onto it and supported well enough. It will likely receive Android 12 support via PixelExperience too. I don't use a phone enough to warrant replacing it or spending more than $150 when I do.