Was my Bishop sacrifice wrong? (Ruy Lopez, Birds defense)

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Hi, I am trying to play an agresive style and in this game I was kind of happy with my own play, I found that my Bishop sacrifice on move number 8 was successfull and that it made the foundation for my victory.
But analyzing the game I found out that Engin says bishop sacrifice is loosing 3.4 point....
What do you think?
Am I on the right path to succesful agresive play, or was my decision really terribly wrong? (and lucky to get away with it)

Actually a blunder. There’s a scientific approach, falsifying the moves first. If nothing speaks against the move is right. Everything else is hope-chess. Like above.

I think it worked in your game, but probably wouldn't work against a stronger opponent (or against your computer).

how can u checkmate your opponent with just a knight and a queen against all white pieces?

@Pungrotte

Yes, it was not a good move. 9...Ng4+ 10. Ke1 all you have done is given up your bishop for a mere pawn.

@Pungrotte why are you trying to play in an aggressive style? Surely playing the right moves is more important than playing moved that try to win quickly - after all chess is a game of both strategy and tactics. Some people are naturally good at playing aggressive chess but others just blunder pieces in the hope of being aggressive, when actually it wasn't even important anyway. It's up to you to decide how you want to progress in the future - playing good moves or playing bad moves that look confusing 'aggressive chess'. If you find this the most fun then that is fine, but you have to accept that thecomputer wil disagree with you.

Eh... Mikhail Tal played aggressively and although many question him, his moves worked during the games! As a playing style "aggressive" is fine but you really need to calculate (or get lucky) if you're going to play that way.

Your move xf2 is excellent. Only the best defense works and then if white finds Kd1 and 4 other perfect follow ups it’s only +1.3 for the computer. First of all your not playing againt Kasparov. But actually even if you were, you should still remain aggressive. I don’t normalky disagree with @Sargon but in this case I think your move was perfect. Risky chess even works at the GM level. Keep up the fighting chess!! So what if you lose some, you will win more.

Yeah, but that’s just too simple, isn’t it? A pawn, a check - no substance.

Aggression was warranted in the position, but there was no need to sacrifice a piece:

8...c5! (cementing the bishop on the excellent d4 square) 9. h3 (else 9...Ng4 is nasty) O-O 10. O-O d5 11. exd5 Nxd5 (11...Bxh3 is also very strong), with moves like Nf4 and Qg5 to follow.