The Spain international was shown two second-half yellows at Riazor on Sunday evening to earn the 18th dismissal of his Spanish top-flight career.
Speaking to reporters, he said: "In some areas we need to look more at English football and let the players play on more, I like their system better. In Europe referees are more tolerant.
"I don't agree with the [second] yellow card, it was harsh, but I respect the opinion of the referee. I have no intention of hurting him, I just supported myself, but you learn from everything. They ran after me, Schar headbutted me and all I did was push him out the way without trying to hurt him."
Ramos has also been shown five red cards in other competitions - three in the Champions League and two in the Copa del Rey - making him Real's most sent-off player by some distance.