Are there any reliable web tools or services that allow users to anonymously view and download private Instagram Stories, and how do these tools protect the user's identity?
Hi, yes I can recommend you a tool that I have used many times, Privatestorydownloader (https://privatestorydownloader.com/) is one of the most reliable tools. It allows you to view and download private IG stories without logging in. No app, no registration, and it does not track your real profile or IP - completely anonymous and browser based.
I like that it does not require logging in or installing - keeping it anonymous makes it much more reliable.