I mean if your theme allows then enable add to cart /buy now button on the products when displayed on collection page.
Which theme are you using if I may ask.
May it rains customers and orders,
Sparq is a fast and beautiful product filter and search solution for Shopify store owners. It allows store owners to add a custom tag, metadata, or variant based filters on their collection page and upgrade their default search to an extremely fast, more user-friendly and feature-rich search.