I'm not into Android at all (iPhone user), but I had no problems installing LineageOS on a Pocophone F1 I bought specifically as a second travel phone for its LineageOS compatibility, beyond Xiaomi's obnoxious process for unlocking the bootloader.

The limited hardware support, specially for reasonably priced models with 5G, is a serious concern, and the limitations with mobile banks coopted by Google into refusing to work on alternative ROMs a big issue as well.