[Help!] Character stuck in ground, won't move

Hello, everyone. So, here's the problem. My player character consists of a Rigidbody, Character Controller, NavMesh Agent, and a First Person Controller script. It seems perfectly fine to me, but every time I enter play mode, my character ends up stuck in the ground and unable to move. I also have noticed that the audio I added to it won't play either. I have no idea what to do or what is wrong with my player character. If somebody could please help me as soon as possible, I'd really appreciate it. Please and thank you!