In order to make the Woocommerce search the default search on your Wordpress site, you need to follow these steps:
- Go to Woocommerce>Settings>Advanced
2.Scroll down to the bottom of the page and find the Search Settings section
- In the Search Settings section, there is a checkbox that says "Use WooCommerce search for front-end search?", check that box.
- Save changes.
Now, when someone uses the search function on your site, it will use the Woocommerce search by default.