I suppose you will have to lobby the other tenants of your complex to support you in approaching the chair of the OC as a collective, to get the answers to your queries that you are seeking.
Frankly, I have the opposite problem where I wish there were security cameras in my apartment block, although who monitors the footage and has access to it would be contentious. I have had items stolen from a secure shed in the basement car park. A tenant let a tradie in to park in the visitor space who helped himself to anything not nailed down by prising a padlock, piled his ute sky high with stolen items and drove away. My unit balcony overlooks the driveway, and had I had a CCTV operating it would have captured the offenders number plate for me to hand over to the police.
The tenants across from me have children who ride e-bikes which they drag into the unit (so they don’t get stolen) when they get home from school. One of the kids has ridden his bike fast along the common path leading up to the security door and smashed into the glass balustrade scattering glass everywhere. With no CCTV proof, the OC has had to pay to replace the glass panel, while the kids are laughing about it. We’ve also had to pay to replace a glass panel that street vandals have smashed on the balcony after throwing a large sandstone rock, and then running off. At the moment I am moving a large flowerpot from the foyer that tenants are using to prop the security door open 24 hrs, so their mates without a door key can come and go whenever they please. This is despite the strata manager writing to all occupants of the building of the necessity of keeping the door closed at all times. If I knew who the offender was with a CCTV footage we could curb the behaviour.
So write to the OC head with a petition of signatures from other residents/tenants and ask for the answers you are seeking.