Unlike Facebook, Instagram does not allow direct sharing of a link.
Links in stories (with Swipe-up) are only allowed for accounts that are verified or have more than 10,000 followers.
However, there are several solutions:
Methods change often, so the best way to find out is to ask Google: How to Share a Link on Instagram
Here is an example of what can be done:
Can’t find the answer to your problem? You can Contact us.