No servers appearing in Gmod (and can't connect)

Hi everyone, for the last few days, no servers have been showing up in Gmod for me (I tried the legacy browser). And if I try to join through a friend, it fails to connect me to any servers, saying that it tried a number of times. I got to the point where I uninstalled Steam and all of my games and started from scratch. Still not working. I’ve searched all around for a solution, and contacted Steam Support, who have not yet responded. Any ideas?

Is this only happening in GMod or does in happen in other source games too?

It seems to be happening in CS:GO as well.

That’s a newer source game, is it happening in games like HL2:DM and TF2?

The only other one I checked was CSS, which is working fine.