I’ve tried running Replicant and degoogled Lineage OS on an old Samsung phone many years ago. The experience was a bit rough, but tolerable as long as you’re a tech enthusiast and willing to make some sacrifices. Back then it wasn’t quite acceptable to me, because my bank app didn’t work. Then they announced that they were going to phase out the old code paper, so authentication through a mobile app was seen as the only acceptable method going forward.