If you’re looking for “anonymous viewing,” I have to ask—have you considered whether that’s really the right thing to do? Many people use privacy settings or Stories because they want control over who sees their content. Trying to view content anonymously or bypassing these settings undermines their choices and trust.
If someone has posted something publicly and you can see it, fine. But if you’re specifically seeking out tools just to avoid being seen, maybe it’s worth reflecting on why you feel entitled to that access. Probably best to respect people’s boundaries and privacy instead of looking for new ways to lurk.