Not really! PostmarketOS is pretty solid; Alpine is my linux of choice anyway. I don't remember having to deviate from instructions on installation.

Stick with one of the prepackaged window managers at first; there is no systemd, so wayland stuff needs either seatd or elogind to fully function. Until/unless you learn how the puzzle pieces fit together there, it can be a bit of a pain in the ass to set up, so I recommend the packaged UIs to start. You can always switch later.