Do you know if the cat belongs to anyone? It could be a stray who’s decided to stay in your complex because someone (possibly a few someones) started feeding it.
A while back I had quite a few strays living in/passing through my back yard. I’m sure part of it was because I started putting out food to try and socialize a litter of kittens born to a stray in the yard (didn’t get the kittens, but we did get the mama; she’s a sweet kitty btw). I eventually bought a live trap. At first I left it propped open with food inside, and once the cats were used to finding food in it I started setting it. After the fourth capture I didn’t have nearly as many coming around; probably didn’t hurt that I stopped putting food out either.
Around here, animal care doesn’t come out to trap stray cats, and if you bring one in they usually neuter it and return it to the area where it was trapped. I haven’t seen any of them lately, but I did see at least a couple of the cats I trapped back in the yard.
No I don't know who it belongs to and your additional statement adds to the conundrum.