There's a way, you can download your archived stories from your Instagram profile I mean. You can only download from your personal profile not from others or your followers. Find my profile, there is a icon as shown on RHS corner that looks similar to a clock. Click and find your all listed posts and stories that are archived after posting. These are my stories which have been archived after posting. If you need to download any of your archived Insta Stories (visit at https://igstories.cc/). Open and click on more option shown. On this screen with a dotted icon. Click and save your posts or stories from Instagram archive.