This video will guide you on how to Hide Products on the website - and Only Display on bundle pages
In case you get an error while trying to create the meta field, saying that this meta field already exists, please check the unstructured meta fields by clicking on more actions on the meta fields settings page, and search for seo.hidden
Make this unstructured meta field a structured meta field by adding a definition. This can then be used on your products to hide them from the store.