So can I just attach a normal piece of Lead as you mentioned earlier? Or Should I buy any crystal?

If you can construct an electrical connection from the metal can connections to the PCB then that would be best. Just replacing the crystal without knowing the proper frequency should not be done.

I'm sorry... I didn't understand...

The crystal in your camera has two leads that go from the crystal to the two points on the PCB. You need to re-establish an electrical connection from the two points on the crystal to the two connections on the PCB. It may be possible to do this by splicing wire between the broken points.

Crystals are made using different frequencies depending on their application. Therefore just installing another crystal without knowing the correct frequency will not work.

It may be best for you to obtain another camera. Then you'll have spare parts for future use.

Yeah.. Then I'll try to go for a new camera... I'll have to say a good bye to EZ-Wireless Camera... tired