The conflicting advice is because there is a ton of different situations. A food blog or an e-commerce shop with 200+ unique URLs will be in a different situation than a small shop or a blog with 10 URLs / products.
Generally speaking you want to nail what leads to clicks and sales for your account and only then scale it up (if you can and can still see the ROI).
To nail it, you’re going to have to spend some time on keyword research (so that your pins get distributed), design and thinking through different angles you can market your products and what makes people click on them so that you can create compelling pins overall. Since this is all new for you and thus will take time, I think 1-2 good, thought-through pins per day is plenty to start with, especially if you don’t have a ton of products.
What you want to aim for is creating pins awesome enough that Pinterest sees your account as valuable and worth distributing, but give yourself enough wiggle room to experiment.
Again, I think 1-2 pins per day to start with would work well for you for now - what you don’t want to do is fall into the „Pinterest bro” trap of creating 20 or 50+ pins per day automatically (with the help of their software…) and flood your account with low quality pins. There will come a time to scale up if you choose to, but first you need the right foundation to do so - and it takes some time and patience.
Later on, it’s like with everything - high quality work pays, and the higher volume of that quality you can output, the better.
Hope it helps! Happy to answer any questions you might have.