If you're seeking some advice, though, I've noticed that the pie charts generally don't do very well. Also, the fortnite/pubg posts or anything referencing parents or teachers.
Try to keep them broad in spectrum and don't make them too wordy; try to make your joke in a couple short sentences.
Look around the internet for pictures you think you could put a funny caption on or look for funny things to take pictures of.
Then again, at the end of the day, there's no way to know for sure what people will like; Thparky had a potato make the first page the other day