It does include children.
“little ones - “Little ones” is from an adjective, used as a noun, which means “small,” “little,” and “young.” So, “the little” or, in the plural as used here, “little ones.” It is a change from the noun used in the previous verse that means specifically refer to “little” or “young” children.”
https://christswords.com/content/mat-186-whoever-shall-offend-one-these-little-ones
I will pray for you.
Still wrong. Any prayers you make are a waste, for any reason. You are too ignorant for it to mean anything.
"Children" do not have the necessary compos mentis to make that decision.