I am sorry you are so frustrated, but please be encouraged to know that most all teams (even big, famous ones) go through some level of what you are experiencing. Believe me, I feel your pain!
Do you have any professionals mentoring your team who are not affiliated with your school? They can help. FIRST is thriving because it provides for PARTNERSHIPS with professionals outside of the traditional school environment. To put it bluntly, if the schools were preparing and inspiring our students at this level, we wouldn't need FIRST.
Please hang in there and try to find something positive to focus on now. Thank your mentors and teachers, compliment and build-up your fellow team members.
And your team is not a "club," it is a future-building, career-building academic activity. (Sorry, pet peeve of mine, calling FIRST teams "clubs.")
Keep us updated on your team.