I'm going to tell my parents they don't deserve to feel proud of me
Why would you tell them that?
They know I've been associating with bad people, and I'm going down the drain, but they don't say a thing about it.
Do not tell your parents that. They do not believe that, so neither should you.
Don't lecture me.
They are proud of you, believe me. Even if you are with the wrong crowd, they believe you can get out of the rut and back on the right path.