Your system information

Gentoo GNU/Linux nomultilib, Weston Window Manager.

• Steam client version (build number or date):
  any
• Distribution (e.g. Ubuntu):
  Gentoo GNU/Linux Nomultilib
• Opted into Steam client beta?: [Yes/No]
  no
• Have you checked for system updates?: [Yes/No]
  yes

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen. Please link any large code pastes as a Github Gist
Steam uses deprecated X11 (xorg) as display server. On any modern DE, WM it's not able to launch.

Steps for reproducing this issue:

1. Install any GNU/Linux distribution
2. Install any modern DE
3. Install Steam
4. Can't find display server, crash.

Please make sure that you switched Steam to Wayland.
https://wayland.freedesktop.org/
https://en.wikipedia.org/wiki/Wayland_(display_server_protocol)
https://jan.newmarch.name/Wayland/ProgrammingClient/