Spare parts can be found on eBay. Might be less expensive to repair. I haven't seen any gimbals that will work with the stock camera other than DJI gimbal. Most others are outfitted for GoPro etc.
Depending on which part it bent you may be able to carefully bend it back into proper alignment. My main arm was twisted once & I was able to gently grasp it with pliers & twist it back. Apply a few layers of tape so you won't mar the aluminum. I didn't even have to disassemble the camera to make the repair.
Circle in red...bended parts. Tried a few times to straight it back...afraid to broke the gear & give up. Looking for 3d printed parts for the whole gimbal (only bended parts). I have a 3d printer but no design file for p2v+'s gimbal parts.
With all due respect, Already broke, bend it. Craigslist, ebay ect if it breaks. If all fails, consider upgrading and use this one as a toy/ loaner for others to learn how to fly if that is an option.