What the hell am I supposed to post? Where do you think I get content?
Same thing here: as much as I wouldn’t mind to post, I just don’t know what !!
Find anything, really. Look at your interests and hobbies and share your experiences with those.
I’m sharing photos I take in multiple communities: cats, aww, toads, birding, etc. I also periodically comment in the communities I’m subbed to so others have things to reply to.
Be the change you want to see in your community.