If I was you I would buy a new motor asembly with the flex lead installed from here.
I think you'll like DJI Mavic Pro Gimbal Camera Arm with Flex Cable. Add it to your wishlist!
DJI Mavic Pro Gimbal Camera Arm with Flex Cable
As flex cable can be tricky to install properly
Then get camera cable from here
Mavic Pro Drone Parts PTZ Camera Signal line transmission line Video Cable for for dji mavic pro Accessories
Buy Products Online from China Wholesalers at Aliexpress.com
(from AliExpress Android)
Or here
I think you'll like 1 Pc Quadcopter Gimbal Camera Signal Transmission Cable Line for DJI Mavic Pro Drone-STAI. Add it to your wishlist!
1 Pc Quadcopter Gimbal Camera Signal Transmission Cable Line for DJI Mavic Pro Drone-STAI
The camera head is held on via two screws and pulls straight forward and the camera cable just plugs into it.
Remove that bent side plate and using a little heat from a heatgun bend back straight so you can screw back on.
And you are all fixed.
Also note, its alright for the ones in the US to give insight to spare parts like ThunderDrones and much appreciated but for ones like you or I outside the US, the shipping from the US is almost as much as the part so kills it and is why we have to sorce else where.
Another option you have is a complete new camera kit with digi board from here
100% Original Brand New RC Quadcopter DJI Mavic Pro Drone Gimbal Camera Spare Part Freeshipping
Buy Products Online from China Wholesalers at Aliexpress.com
(from AliExpress Android)