why doesnt my activity go past 52 no matter how many posts ive made?
It's simple , because you get a maximum of 14 activity per two weeks . You should wait for the next activity reset (each couple of weeks) to get your activity higher .
Why do people keep asking about this? I think we should make a video (or something) to make people more understand about this.
It's because not everyone are aware of the rules and not that easy for them to find those posts first.
Even if you make a video and post it somewhere, that'll still be hard to find for them.