Rooney was handed the armband for Saturday’s friendly, as John Terry was forced out through injury.
“It was a great moment for me to lead the side out, something I was really proud of,” said Rooney. “When you are a young kid, you dream of captaining England but never think it will happen.
“Tonight it has happened and I’m proud, and my family will feel the same, but I don’t think it was the best game we have played. We can do a lot better.
“The first half was quite even, but in the second half they were the better side and deserved the victory. We looked tired at the end. We did okay, but we can do better.”
Rooney believes a full-strength England are capable of beating Brazil.
Rooney said: “Can we beat Brazil with a first XI? I think so. It was probably Brazil’s strongest side bar one or two players and we had nine or ten missing.
“That is difficult for any team to overcome, especially against Brazil. At full strength we definitely would give them a better game than tonight.
“Are they the best we’ve faced at international level? I don’t know. I think Spain are better. I didn’t play in that game (in Seville in February), but I watched it and Spain were a bit better and created more chances.”
