Happy to help out. In order to do this, you will want to create separate collections for 'Merch' and 'Sauces' within your Shopify admin. Our step-by-step guide on creating collections and assigning products to them can be found here.
Once you have created both collections, you will want to add them to your main menu navigation at the top for your customers to see both 'Merch' and 'Sauces' collections that they can click on to view your products. We have a guide on editing your navigation and adding menu items here.
That's all there is to it! If there is anything else I can help you with, please let me know.
I wanted to say thank you for the input on separating my products.
I have another issue, this involves the products. I still have everything showing up on my products on my webpage. How can I just have the hot sauces on there and not the merch? I did figure out how to get the merch to collections and put them in a separate category. Now I just need my products (hot sauces) to be separate from the merch.
Can you take a full-page screenshot of where you are still seeing these two product types being mixed together?