Instagram is social. Pinterest is search.
People on Pinterest aren't scrolling to kill time. They're looking for something. Planning to buy something. Already thinking about it before they even see your pin.
That's a different crowd. And 90% of weekly Pinterest users say they actually bought something after seeing it there.
Here's the other thing most people miss: Pinterest content doesn't just disappear.
On Instagram, a post is basically gone in 24 hours. On Pinterest, a pin you made six months ago can still bring people to your site today.
That's not some hack. That's just how it works.
But it takes time. And most people give up before it actually starts working.
If you can make a clear vertical image, use real keywords in your description, and keep posting, you're already doing better than most beginners who try it once, see nothing, and walk away.
It's slow. But it builds up. And that's pretty rare on the internet.