Hello! I spent some time trying to solve your problem and I think I found out. you made a pretty common mistake, you didn't put the clutch fluid on the car, and the rockershaft was unregulated. I also took the liberty of fixing your windshield and putting some money in your savegame. but if you want to fix it yourself, just screw all the clutch bolts and put in some fluid.
P.S: sorry if my english is bad. i am from Brazil.