Car won't move

What is your question?

I have mustang 2000 v6 manual, and I was putting it on reverse and my car suddenly feels stuck. So I shifted to 1st gear and tried to park my car again and it was moving but it was struggling. Then something like a thin metal inside my transmission sounded like it fell off. My car would shake crazy so I moved it up in the parking spot best as I could a And left it alone. Checked around my car and looked under everything seemed fine. Car will start, it'll shift to every gear but if I try to drive it my car acts as if it's stuck and barely move. I'm order for me to move it I have to rev up to at least 2500-3000.

How long has your 2000 Ford Mustang had this problem?

1hour