It sounds like you are feeling unsure about your commitment to the basketball team. It's natural to feel unsure or uncomfortable when you are starting something new, especially if you don't have a lot of experience with it. However, it's important to remember that it takes time to learn and improve at a new activity, and that it's okay to make mistakes or feel frustrated along the way.
If you are feeling unhappy and unfulfilled by your participation in the basketball team, it may be worth considering whether this is the right activity for you. It's important to pursue activities that bring you joy and fulfillment, and if basketball is not doing that for you, it may be best to step back and explore other options.
On the other hand, if you are committed to giving basketball a fair chance, it may be helpful to talk to your coach or a trusted teammate about your concerns. They may be able to offer advice or support to help you improve and enjoy your time on the team. It may also be helpful to set some specific goals for yourself, such as learning a new skill or improving your fitness, to help you stay motivated and focused. Ultimately, the decision is up to you, and it's important to do what feels right for you.