When connecting the USB cable to your camera, don't use a lot of force. The USB connector should slide into the camera's USB slot fairly easily, without much force required.
To avoid problems, be sure you have properly aligned the USB connector with the USB slot. If you try to insert the USB connector "upside down," it won't go into the slot properly. It might fit with a lot of force behind it, but if you force the connector into the slot upside down, you'll likely damage the USB cable and the camera.
Additionally, make sure the panel or door that hides and protects the USB slot is completely out of the way. If the panel is too close, you could pinch the panel between the cable and the slot, and the connector will not insert fully, leaving the USB cable unable to operate.
Finally, make sure to insert the USB cable into the USB slot, rather than another slot, such as an HDMI slot. Often times, the camera manufacturer will include both a USB slot and an HDMI slot behind the same panel or door.