My guess is that your mom is not going to change her mind, but I would encourage you to talk with her about your inviting small groups of boys and girls over for some activity like a picnic, swimming, going to an arcade, hiking, biking -- whatever you and others might enjoy. Two things will happen. You will learn about some of the boys and you will learn how to interact with them. At the same time your mom will have a chance to build up her trust in you and give you advice if anything happens that you are not sure of.
Enjoy your middle-school years. Learn about others. Learn about yourself. When you are ready, your mom will let you date.