Hmm, perhaps instead of Na3, I could've played for the N to go to g3, via d2-f1, to help defend over there. Good point about not sensing the Kside pressure earlier.
Looking for feedback on my games from strong players! Ruy lopez with 3...Qf6?!
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c3 d4 is perfectly okay - in fact, it's recommended. I think d5 was a huge error. It's your decision when to open the center; if he plays exd, cxd and your center is mobile and will plague him for the rest of the game. Develop for another move or two, then dxe. It'll take black two moves at least to develop a bishop, which means you can develop more and still open the position before he castles.
I'm a recently made OTB B-class tournament player and just haven't found many A/expert/Master friends so far! Here is a loss I had a few months ago, for which I'm not sure I'd play much better now.
No matter your rating, feel free to leave feedback, or questions about what I was thinking during a particular move, etc. Thanks for reading!
Thanks for reading!