Thanx everyone for the support. I have ordered a new prop and will be doing repairs when i get it.

Tail wheel is around 15mm and raises the height of tail by 25mm . It is also very thin and doesn't work properly on asphalt runway at my college. It works fine on concrete pavement.
Today, my plane wasn't moving at all even when i gave more than 50% throttle.
Can i do something about the small tail wheel ??