One anecdote from a UK internet user. I just tried googling

long covid

and the top result was NHS. Not sure if it is for other nationalities but they're definitely getting good ranking in the UK

edit: I also tried flu and meningitis and NHS is top for both of those queries too.

I consistently see NHS results at or near the top for most symptom searches.

I don't know if that's geography specific.

I just tried it for "swollen ankles" and the NHS came top, followed by webmd.

Yes, I'm in the UK and will often include "NHS" in the search terms when reading up on health issues or advice.