That's a great idea but getting there is so hard!You can post the link in your bio, After you have 10k+ Followers then you can post it in the stories
ThanksThe only clickable link (other than in stories) is in your bio (many people use linkify I think?) but you can just have your youtube address as your "website" and do the good old "link in bio" for whenever you post a video, pop a thumbnail of the video as your post, and make the description "link in bio" is generally how most people do it. Not against any Instagram policies, but they don't provide native linking outside of those two options.
Wow I never knew about this that's a long way to goYou can post the link in your bio, After you have 10k+ Followers then you can post it in the stories