Exclude certain products from product recommendations (dawn theme)

Store Design
1

We need to exclude certain products from the recommendations sections. we are using dawn theme.

We already used {% unless %} inside recommendations loop to filter results but we are looking for a way that these certain products should completely exclude form the recommendations so that there will no need to add additional conditions inside the recommendations loop.
Any help will be highly appreciated!

2

two ways - you can assign a collection or assign a tag