My friend was in a similar rut to yours, and I was in a slightly-different-but-equally-shitty place. We weren't particularly close, hadn't spoken for a long while, and he had moved to another country, but we certainly enjoyed each other's company.
One day, I got a message to hang-out on voice-chat to play some video games online. I never particularly got into the game we were playing, but we had a terrific time cracking jokes, and inevitably commiserating about some of the stuff we were dealing with at the time. That game night started into something regular; every week at least once a week for a while.
Another mutual acquaintance joined the group, and then some folk I didn't know. None of us in the same geographic location. All of us, without consciously doing so, found each other at a time where we really needed support. We'd play various games, all sorts of genres, some I had a blast playing, others less so. We didn't always unload heavy shit on one another, but we always felt free to. The games were great, but we mostly enjoyed shooting the shit.
4-5 years later, we're still gaming. Some months we only get one session in, other months we play most nights.
Since we started dating, my friend and I have had massive career changes and a lot of the issues we had are resolved. Writing that out feels like bad luck, but it's true :)
It could be that the companionship just helped making "waiting-out" the rut easier, but I like to think that we helped each other have the courage to tackle the things in life that we needed to.
I know my story is specific to me, but I think the general lessons I learned are:
1) I used to worry about reaching out to old friends, thinking our time had come and gone. If you're thinking about them, they may be thinking about you; give them a ring. If you were ever as close as you thought, you'll just start where you left off.
2) Regular hangs are important. Even quasi or semi-regular. Things happen over the week, small victories and defeats, that are so great to share. It's sometimes awkward to text or call someone to say "my chili plant that I grew from a seed made its first chilis!" or "the fucking vending machine ate my quarters >:(". It's way easier if you're all just chewing the fat to share that.
3) Among Us will result in arguments. Just don't bother, it's not even cool anymore