Chess game

I dont know what this opening is, so I dont know if you are following some established stuff, but it looks fine and logical to me. One minor detail is 7...Bb7, i tihnk you can improve on this, because in some instances I can imagine where the bishop is better on a6, so i would wait at least one mroe move before commiting it there, and play Nf6 probably, and then maybe dc, and only later Bb7, depending on how white reacts. 8...Na6 i do not like. I tihnk the knight has very little potential on that square, doing nothing but supporting a ...c5 center challenge, but if you wanted to play ...c5 it was ready anyway without Na6 so that is not logical. If you just played Nf6 instead I do not think white gets a good position if he plays Bxc7, opens the c file, bishop will have to move too much. 9...c6 i do not like, because the queen cannot be tolerated on that square, makign pressure on c6 and a6, it hurts your position too much, so I think 9...qd7 was necessary. You did not have compensation for the pawn you lost. 15...Nf6 is much more logical than Ne7 because white has some pressure on h7 and none on c6. White could have played 19. Qxb7 winnign easily. But your position was very near lost anyway. I cant imagine you missed that very obvious unprotecting the bishop...if you did and think you get compensation, you dont. You said on 24. that qxf8 is a queen sac. Its not. White is obviously simply winning 2 rooks for the queen...thats winning material its not a sacrifice. nothing subtle about it. Oh were you playing white? Just take his bishop...19. QxB...haha...you try hard to win it later but it was sitting right there for you on move 19...