Already discussed: Librem 5 — painpoint assessment 2021 and following posts (in a topic that admittedly is discussing a multitude of different things).
You apply for an account to be able to create new Issues. It was a while ago that I did mine but I think go here: https://source.puri.sm/public and Click “Register”.
I would file with Purism. On average, a user can’t be expected to know how the pieces work together and hence where the one or more code changes need to be. An Issue filed with Purism ensures that there need be only one report of a given issue and gives everyone something to track for progress.