[SOLVED] Steam taking over 5 minutes to open, and can't sign in. (Was missing lsb-release package)

Hello everyone! I have this issue with my steam on arch linux where it takes about 5 minutes and sometimes more to start, then I keep getting connection errors when trying to sign in. Ive opened an issue on the github page you can read for more details (logs etc)

Basically now I'm wondering if I should just reinstall steam and see if that fixes it. Here is the situation though. I have a steam library in my /home partition, as well as on a separate hard drive which is always mounted. I have copied the steamapps directory from the home side of things to a temporary location, so I assume if I reinstall and copy it back I should have all my games and stuff set up exactly as they were before the issue? Also, do I need to backup the steamapps directory from the hard drive which is separate to /home?

The reason I'm so hesitant to just wipe everything and reinstall, is because I spent a good couple of weeks trying to get Silent Hunter 3 set up with steamtinkerlaunch, and even on release it was quite a finnicky game, let alone 20-something years later on linux running through proton, and now I have it at a point where it works.

Anyway, I would love some help, so thanks in advance!

P.s. Updating system didn't solve issue

Just checked, and I have all the dependencies listed on the package page satisfied in some form. Now, whether some version is slightly outdated, I don't know how to check

Reinstalling steam doesn't seem to fix the issue.

pacman -R steam-native-runtime steam
pacman -S steam

When launching from the terminal again I get the same output. The 2 lines that stand out are the following:

src/clientdll/steamengine.cpp (2773) : Assertion Failed: CSteamEngine::BMainLoop appears to have stalled > 15 seconds without event signalled
src/clientdll/steamengine.cpp (2773) : Assertion Failed: CSteamEngine::BMainLoop appears to have stalled > 15 seconds without event signalled

Any ideas how I can troubleshoot this?

[SOLUTION] I had to run

pacman -Syu steam

which seems to have also installed a package called lsb-release

Im not sure why running a full system upgrade and also uninstalling and reinstalling steam didn't also grab this package when I did those, but there you go. I do a full system update by simply running yay as to my understanding that is the same as running yay -Syu but it first runs pacman -Syu. If anyone could provide some insight into why that might be I would appreciate that so I can learn from this experience. Thanks again everyone who tried to help!