If you want to exclude blogs and pages from the search results of your store search in Shopify and only display products, you can set this in "Search & Discovery"

In Shopify, if you want to exclude "Blog" or "Page" from store search results, you can change this in the settings of the "Search & Discovery" app.

[How to set it] Turn off the items you want to exclude in "Settings: Search Results" of the "Search & Discovery" app