K.C. you should not be reverse parking at Lulu parking lot, or anywhere it does not explicitly say so.

Sorry, I feel you are wrong, I live near the shopping centre, and I fail to understand, people with driving licence and being tested on the traffic rules in Qatar still want to reverse park, while others are waiting to move forward. (whether applies in your case or not) also maybe the reason for the police to fine you.

Most of the public parking is "not reverse parking"

I sympathize with you on the damage to your car.