Surprisingly Black is already in a psychological zugzwang after 1.e4 e5 2.Nf3
Most want to avoid Ruy Lopez.
If they don't like Petrof then the only thing that remains is Philidor's.
Um...no, if you play 1...e5 then that means you're okay with one of those things. I play 1...e5 and I have an enormous amount of preparation against the Spanish, in which I am very confident, and don't "want to avoid" the Ruy Lopez.
"Most" definitely don't want to avoid it. A few do. Those are the ones who try to make the Petroff or Philidor work. But as evidenced by all statistical evidence, 2...Nc6 is the most popular move by a mile, maybe for a reason
Why so many people play the Philidor defense on chess.com? What's so good about it? I estimate that more or less 30% of reponses to the my e4 openings end up in the Philidor..