Knight line
move 9,10,14 for black are mistakes also in the first one.(exposing the kingside without needing to was probably a mistake)
for the 2nd move 5 was the mistake sacrificing a pawn when not needed.(if you want a good gambit you should do the Evan's gambit. 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b5 the gambit. after that you can do f3
It is called bookline and I know these are not best because I have chess coach and this is what I see.
Bishop line