https://www.facebook.com/ads/library/ has most of what you’re asking for I believe.
Literally the first ad that Facebook shows on my "newsfeed" is by "Jellop", but when I search for Jellop in their ad library, I get no results. In fact, I can't seem to get any results at all, regardless of what I search for, or what I select as the country.
Perhaps I'm being cynical, but my impression is that FB is aiming to provide just enough information that people will say "they're doing that already", and not enough that people can really understand what's going on. But I might be wrong.
The Ad Library claims to show all active ads, not just political/social ones. That's presumably true, but hard to verify or make use of. The "Jellop" ad that I couldn't find was missing precisely because the page name was something else they'd created for that ad.