>>324926992
there's posters from here on vrchat for 16-20 hours of the day, if you're looking for something else you'll have to wait for or host lobbies

for dedicated servers, the Pavlov dedicated servers are only turned on when they're scheduled; I think someone's hosting an Assetto Corsa server 24/7 but I'm not sure and it'll be empty unless you drum up interest for people to join.