Game with 1. d4 Against the French Defense

lichess.org/7njmTeGv7yRa/white

(Against Computer.)

Here I was white. Is 1. d4 a good move, and did I ever blunder? What mistakes did I make, and what should I have played instead? Advice and constructive criticism is welcome.

@InnateAluminum #1
Just a quick observation :
Instead of 21.Bxe7+ the move 21.Bh7 (threatening Qxg8# checkmate) most probably won immediately.
That is also an interesting learning moment in my opinion. Beginning chess players can start to learn that a pin can very annoying, and that their own active pieces should not be traded that easily. By understanding that, and bringing that knowledge and experience into your own game, you can boost your chess skills progress.
Two rules of thumb applied here imho :
"A pinned piece is a bad defender".
and to some lesser extend :
"The threat is stronger than the execution".

@achja (#2)

I traded my bishop because it was useless and I could gain a bit of material, but I missed the mate. Thanks. My active piece was there only to gain material and a great advantage.

The pinned rook was self-pinned and it was not defending anything, but next time I'll be on the look out for a mate.

Of course 1 e4 and 2 d4 are good moves.
4 Nf3 loses a central pawn.
19 Bc5 was strong.

@tpr (#4)

I played 4. Nf3 and gave up the pawn because I was defending some other things, though I do think 4. Nf3 wasn't the best move.

19. Bc5 probably would have resulted in a checkmate threat, but I missed it.

Thanks!