By the time you are 30, you should be a moderator of at least 10 Discords and Mastodon instances, a third of which you later realize you're now the admin of because the original founder just assigned it to you before they walked into the woods never to return
More seriously folks, especially if you're on one of the new fast-growing instances, talk to your admin and offer specific help if you're willing.
Not "anything you need", go for specific actionables, like "I can help moderate". Moderation isn't super hard, just a small daily time drain where you read some emails (and sometimes see some real pieces of shit but then you get to bin them). Cash may be easier or harder for you and can also help a TON depending.
These are our communities. Pitch in!