Is my mom being stingy about money?

As a parent, your mom doesn't have to hand you money unless she thinks it's necessary. It doesn't matter what other kids in the neighborhood get from their parents. You are not related to them and neither is your mom. If you want more than your mom offers - get out and work for it. Do yard work for neighbors, wash cars, walk dogs, or something else. Earn what you get in life and you'll learn to appreciate it more.