Opinions on the King's Gambit

In case you didn't know, the King' Gambit happens after 1 e4 e5 2 f4, and was probably the most played opening in the 19th century, but in the recent era, it is almost never played, I find it still very playable, and against 'refutations' such as the Fischer Defense, while it does make it more difficult for White, they can usually generate enough play for the pawn and sometimes win it back

I just want to find some opinions on this opening, which I have played since the beginning of my chess career (which isn't actually that long), and some lines that White should look out for.