Of course if you are frustrated with your results in the Scandi right now it is natural to start with something else, and probably that experience will give you a broader outlook on chess (familiarize you with new position types). One shouldn't discourage that, and every developing player does it.
But of course it's also worth saying that there is nothing wrong with the Scandi at your (or any) rating level, and it seems quite suited to your enterprising style.
There's always the option to vary within your repertoire rather than chosing new openings.
I see that you play the Scandinavian with Nf6, and on d4, you play Nxd5. Why not go for Bg4 instead, the Portuguese attack, which is deadly and fun? A bit of concrete preparation in those sharp lines will win you plenty of points.
Likewise, on c4, you play c6, but of course, there's also e6, the Icelandic gambit, which likewise leads to straightforward, satisfying attacks.
There are nice Youtube videos on these lines by Miodrag Perunovic, and also the book by David Smerdon.
I doubt that the Alekhine or the Pirc can set the board on fire that easily. Particularly, concrete preparation doesn't pay off that well in these openings at the 1800 level, since the knowledge you acquire will be largely about how to survive the opening with a playable position, not about how to blast through.
As for playing against d4, you seem to play Englund Gambit. Maybe the Albin or the Chigorin Defense would also be worth a look.
But in general, I'd also doubt the premise that other 1800 players (or stronger players, for that matter) know that much theory, and that you're losing games by being outprepared. Chess players are always paranoid about their openings, but it's usually all in their head.
Of course if you are frustrated with your results in the Scandi right now it is natural to start with something else, and probably that experience will give you a broader outlook on chess (familiarize you with new position types). One shouldn't discourage that, and every developing player does it.
But of course it's also worth saying that there is nothing wrong with the Scandi at your (or any) rating level, and it seems quite suited to your enterprising style.
There's always the option to vary within your repertoire rather than chosing new openings.
I see that you play the Scandinavian with Nf6, and on d4, you play Nxd5. Why not go for Bg4 instead, the Portuguese attack, which is deadly and fun? A bit of concrete preparation in those sharp lines will win you plenty of points.
Likewise, on c4, you play c6, but of course, there's also e6, the Icelandic gambit, which likewise leads to straightforward, satisfying attacks.
There are nice Youtube videos on these lines by Miodrag Perunovic, and also the book by David Smerdon.
I doubt that the Alekhine or the Pirc can set the board on fire that easily. Particularly, concrete preparation doesn't pay off that well in these openings at the 1800 level, since the knowledge you acquire will be largely about how to survive the opening with a playable position, not about how to blast through.
As for playing against d4, you seem to play Englund Gambit. Maybe the Albin or the Chigorin Defense would also be worth a look.
But in general, I'd also doubt the premise that other 1800 players (or stronger players, for that matter) know that much theory, and that you're losing games by being outprepared. Chess players are always paranoid about their openings, but it's usually all in their head.