GMod folder is missing

So, my computer cratered, I got it back up, and I reinstalled Half-Life 2 and Gmod. problem is that I can’t find the gmod directory, the only folder in steamapps is source mods, all of the rest are “.gcf” files, I may sound a bit dumb, but I really need a hand. Thanks

You need to PLAY Gmod before the folder appears. So play it, then go back.