what should i post on instagram?

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First, how often should I post? I know some people who haven't posted in like 15 weeks, but they still go on their account, and some people post every day..?
Second, what should I post? Like a picture of my pets? I was also thinking about doing a tbh thing, but idk how well that works... Could someone please tell me if people generally like that, and what to say as the tbh to people who like the photo? (like what if my crush likes it? or someone who I don't know that well?) Any other ideas? Like what about something I painted in art class, (I have average-to-good artistic skill) or food? (which food?..)
Sorry, about the tons of sub-questions! If you could please answer as many as you can I would appreciate it SO much!! I got my account less than a week ago, so I don't have the hang of instagram yet lol.
and I didn't really know which category to put this in so sorry lol