Tail light issue causing problems. Please help..

[187shark]

Hi all new to the community here. I have a 2014 RS 6 speed manual... and so about a year ago my tail lights got cracked and eventually the plastic housing broke on the driver side creating a substantial hole. I have the LED lights with the HID headlight set up so it's all a pain in the *** to replace the whole assembly. I could not afford new assemblies at the time and eventually, im sure, is what started causing more problems. As of right now I have the passenger tail light not working, the driver brake light and turn signal not working. The back up cam not working, it doesn't even beep anymore when I shift to reverse. The reverse lights also arent coming on. The hill start assist is not working anymore, and last but not least, the spoiler brake light inoperable as well. I have checked every fuse in the car. Under the hood, the passenger compartment, and the trunk fuse boxes. There wasn't any blown. I just got some new taillight assemblies a few days ago and before I break it down and replace those I wanna make sure I address these other problems too since I'm gonna be right there. Any help, tips, or direction anyone could supply would be greatly appreciated