Scratches in the underground garage – HELP!

Hi dear forum. I have a huge problem. Situation is the following. With my new car I stand in a closed and only accessible underground garage for tenants. And as the devil wants me to have a friendly neighbor who scratched my car, apparently out of envy or plagued by inferiority complexes. I also bought a surveillance camera nice handy and small (must say for little money) and have the problem that I put up all three hours Since I suspect that this person also suffers from persecution madness I am sure that he has also started a surveillance of the underground car park from his car. What I claim is easily said. In total three different incidents and every time I have not positioned the camera. Counting one and one together? No matter the damage is there and I now want to carry out a long-term surveillance of my car best from the car and with little increase d with 360° day/night surveillance. I also found sohon a bisl what on the net but if I’m honest I’m not really something useful. By the way, if I put the car on a visitor’s parking lot which is publicly accessible then that’s the supervision of my property legally in Austria? (from German law I have read here on the subject already what but how is this now with us in Austria???? I would be incredibly happy about numerous advice and Tips and please do not refer me to the search function. I think I spent the last week min 6 hours a day with the afforestation of the WWW. Mfg Dracoextrem