There's a lot of fascinating research on pre-bunking by people like Gordon Pennycook, Sander van der Linden and others that shows that if you highlight to people what misinformation might look like and what kinds of strategies might be used to push it—such as relying on an anecdote instead of the body of evidence—they'll be prepared to see it. If you do that, they're less likely to spread the misinformation or internalize it.
We can hopefully figure out ways to do that at scale. However, it's also something you can remind yourself to do, and remind your friends and family to do.