There is no magic answer to your question.
With Pinterest, it's all about niche.
It's all about audience preference.
It's also all about user engagement.
That's a lot of variables to keep on top of.
To say that if you have some sort of magic equation where you post a certain amount of times and then all of a sudden, you get all this traffic, if that was the case, then everybody would be using Pinterest.
That's obviously not happening.
So do yourself a big favor.
Create several different accounts.
Target niche in different ways, and run experiments.
See which types of pictures get a lot more clicks than others.
See which content positioning gets more attention than others.
While this seems to take a lot of work, the good news is we already have AI.
AI can help you with variations.
AI can help you with tracking.
AI can help you "mutate" your content so you can try different variations to see which works.
The bottom line strategy is quite simple.
It has worked before and it's working now and it will continue to work forever.
What am I talking about?
I'm talking about this: Make variations, figure out the variation that gets the most traction, make variations of that, run low-level tests again, and keep repeating this until you find a tried-and-proven approach, content strategy, or format.
Once you nail that, you can then scale up. That's how you play the game.
This is nothing new.