Hello,
How can I add add to cart button on collection page under price on symmetry theme?
Thank you!
Hi @Iosif_Mihai 
if a theme doesn’t have a quick-add feature, or custom-liquid block/setting for a specific section or it’s blocks, then an advanced theme customization is required to have an add-to-cart button in a collections product grid for each product.
Editing the themes relative part of code for the product loop to add a product form; without a variant selector and without a quantity selector.
https://shopify.dev/docs/storefronts/themes/architecture/templates/product#the-product-form
If you need this customization then contact me for services
Contact info in forum signature.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.