Maybe review your opening base ? Also train endgames ? Endgame is for IMPROVE, not IMPROVE THIS (because you did checkmate quickly)
How can i improve this?

oversight, now that i think about it, all doing Bg5 in 13 would've done is double up those pawns
but yeah, turn 13 was a misclick
Remember to develop your pieces to the centre. The range of movement of pieces, especially knights, is greatly reduced when you put them on the sides of the board like you did on move 3, so make sure you're attacking the centre and allowing your pieces maximum range of movement.
Here is the thought process I run through in my mind before making a move:
1. What was the purpose of that move my opponent just made? It's important to keep up on both your, and your opponent's plan, so focus on preventing their attacks before forming your own.
2. What are the top 3 or 4 moves that come to mind here? Then spend a little time analyzying the pros and cons of each one.
3. Once you choose a move, think about how your opponent could hypothetically respond to it. This will help you start forming your plans for your next move. There were one or two times you made a move that could have resulted in your piece being captured but your opponent didn't notice it, so that's all I've got for you.
Good luck and have fun !

thanks wally, thats really helpful!
also sadly i think that game was a record for me, only 3 blunders, and 0 mistakes
thanks wally, thats really helpful!
also sadly i think that game was a record for me, only 3 blunders, and 0 mistakes
You did well, I only noticed a couple moves I would have made differently and that checkmate was a good find on your part 👍

thanks wally, thats really helpful!
also sadly i think that game was a record for me, only 3 blunders, and 0 mistakes
You did well, I only noticed a couple moves I would have made differently and that checkmate was a good find on your part 👍
ty, what would you have done differently?
thanks wally, thats really helpful!
also sadly i think that game was a record for me, only 3 blunders, and 0 mistakes
You did well, I only noticed a couple moves I would have made differently and that checkmate was a good find on your part 👍
ty, what would you have done differently?
I might not have taken the queen out early, although that wasn't a bad move really just a preference. As I said before, I also might have played 3...Nf3 rather than 3...Nh3 (I only just saw that annotation on why you made that move, but still I think it's better to attack the center because that bishop attack could have been evaded by the queen or blocked with a pawn). 8...Nb5 also allows for a capture on black's side, so maybe I would instead go 8...Bf4 to attack the queen and develop a bishop, or move that knight on h3 a little closer to the action.
Also, I see on move 13 you were planning on going for the g5 square. That could lose your bishop, but were you trying to set up an attack on the f7 square with your queen? If so, I may have played something else there too because while that is a good agressive attack, I think the material lost in getting there (losing the bishop) makes it not worth the effort because I can't see a way that could end up in checkmate for you, although it does disrupt the king's position, so maybe it is worth it -- I don't know!
Anyways, that's about all, every move you made after 13 was really top notch so good job on that.

Since you are.. too beginner i'll keep this simple and short;
Playing 3. Nh3 by intending to play 4. Bg5 and 'take' the queen, simply wouldn't work. A simple pawn push or Nf6 can easily block it.
Do not place your pieces into inefficient squares for a dream move. Practise 'opening principles' a bit more.
It's good for you to ask how you could improve here. Being open for suggestions is a good start at chess.
3. Nh3 on its own is perfectly ok.
8. Nb5? might not be the best investment for White, since 8...axb5 leaves White with almost no compensation for the knight and Black even gets a semi-open file for his rook on a8. Probably the en passant 8. cxd6 is worth looking at, since White runs away with the captured pawn and Black suffers from a lack of development relative to White.
9. c3? defends the check but not the same knight. Better is 9. Nc3 and White saves both the check and the knight.
13. Bxh6? and 13. Bg5? are not exactly good moves due to reasons similar to 8. Nb5. Instead, 13. Qxd5 seems to be good - Black blunders one more pawn and he has b7 to protect. Note that in this case, 13...Bc6? 14. Qxa5 and White wins.
Well, you eventually played 14. Qxd5 anyway. And that was a ridiculously good, unusual checkmate which I rarely see even at regular play by players.
I think overall the main issues are just hanging more important pieces for less valuable pieces or "a chance to catch a bigger treasure".
i don't know how to annotate, so apologies
edit: found out nvm