Rel Canonical inside collection

Hi all !
I’ve been trying to improve the SEO of my website and in the “issues” that have been brought to my intention, there are “Duplicates pages without canonical”. This concerns a collection of mine where some articles are very similar. I’ve been reading about “adding rel canonical” to my articles but I don’t understand how I can add this tag to a specific URL and not the entire collection. I’m kind of a beginner so I might be asking something very obvious here.

Thanks for your time and have yourself a good day !

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Under site settings, you can add a canonical URL base. Webflow will auto-generate unique canonicals for each of your pages then.

Here are some notes so that you set it correctly;

Hi Michael ! I’m going to look it up, thank you so much. Have a nice day !