Have Relationship Questions? Ask a Counsellor for Answers ASAP
It sounds like she might be afraid of losing you to your friends so she feels the need to put them down in order to hang onto your relationship with her. How old are you?
She might feel like she is losing you to these friends and wants a closer relationship with you and may not know how to go about it. I would continue to talk to her about how you feel and ask that she listen to you when you try and talk with her. Teenage years can be a tough time so stick with it and keep working on your relationship. Let her know that even though you have your other friends, you love her and she is a wonderful Mom.
Those are the ones that she may feel you could choose over her.
So find what way works best for you to talk to her but communication is crucial.
It sounds like normal adolescent struggles between the two of you....tough space for all. She is your mom and you are 14 and she makes the decisions at this time in your life.
I might have a different view than you but at 14, respect for your parents and their wishes whether it be about your phone or schools is paramount. I am sorry you don't see it that way.