Hi. First game, fritz 11 "says" it all started in move 22.Na4
He would play Be2 instead. Before that it was all ok. Now what fritz would play:
24.Nxd7
25.N3c5
26.f3
28.Nxe4
It looks like your opponent played very accurate and even with fritz I still see he's in better position.
I hardly see any common mistakes, though maybe someone better could find something. I do agree on the second game you should've gone with 14...exd5. Your missed opportunity was 15...Bxe1 and you're up the exchange.
I think maybe you need to focus on your strategic plan, and seeing when you could apply tactics. In the 1st game, you quit your kingside attack and started up on the queenside because you didn't see anything. With proper manuevering, it might have been possible to make something happen, though i can't say for certain. You needed a strategy. At move 12 black move his knight back to f6. This gave you a free move to adjust your pieces. 13. Ng5 adds another attacker to your plan. Reposition your bishop to e5, and you can remove a defender. At this point you're threatening mate. Black can still defend, but at least you're pushing your strategic plan about as far as it can go.
There was another possible plan earlier, but it requires you having knowledge of that tactic. It might help for you to play some symmetrical king pawn openings, as there are some good opportunities for tactical play.
second game. two chances to take his rook
15... Bxe1
16... Bxe1 :)
18...Bxd4 much better than Nxe5
19...you played Bd7 (fritz would play Rf8) and after 20.Bb1 he is about +5,5 in position
20...you played g5 and that's checkmate in 4 (fritz would play Qf8) but it seems like your position is lost anyway.
They were both well matched opponents, so you shouldn't kick yourself for those losses.
First game, 11. Rfb1 is slightly awkward since Rab1 and b4 is more typical. On move 12, you are given the chance to give up your weak bishop for his stronger bishop, but isntead you move away and eventually trade on move 15 (why then?). After that bishop is gone (15... Qxd6) you can attack the dark squares with maybe a5 and Na4 but instead played 16. b5, a positional mistake (IMO). From there you get slightly outplayed and then blundered.
I'll assume Rd1 was played in game two since Re1 is illogical (I can't imagine it was hanging for two moves). Game 2: know opening lines. You have a chance to enter the Meran variation of the Slav with 5... Nbd7 when you will have to know some lines. Maybe Bb4 is ok, but it gets awkward when white plays a3 and b4 with tempo.
On move 14, 14... exd5 might have been better although cxd5 might not be bad either, but in either case the f6 idea isn't good since it weakens the white squares too much, as you later saw. You could instead play Nf8 (cover h7 threats) then Bd7 and play on the c-file, although I still think exd5 might have been slightly better.
Above is first lost.
Below is second lost.
I think I was burned out for that last lost and not thinking correctly because I was taking a energy shot for every game that I played.
Please leave comments and tell me your opinion! Maybe I'll know what to work on besides tactics. Maybe I should play solitare Chess?