Why can't i do thrusters?

I'm curious, why are you having difficulty performing thrusters? Are you experiencing any pain or discomfort in your shoulders, back, or knees? It's possible that you're not using the correct form, which could lead to injury. Additionally, have you been working out consistently? Building up strength and endurance takes time and consistent effort. Have you considered consulting with a personal trainer or fitness professional to help you troubleshoot the issue and improve your technique?