just like Seiichi said, it is better to look for a guild in game.
Keep in mind that guilds have their rules, and one of them might be "players above x lvl".
But still there are many guilds friendly for all lvls.
BuriedAlive is also looking for new members, we're still pretty small, but the players we have have a lot of game knowledge and experience, so we have a lot of resources in terms of builds for any class (besides guardian) and pretty much anything else you might want to know. We don't really care if you play a lot or what level you are as long as you're somewhat interested in the game generally and you're generally chill. You can hit Kazuno or SomniumZ up in game if you're interested