The best is when you literally ask to see the car / apartment.
"I'm in the military deployed / in Africa doing charity work."
99% of scams can be avoided by seeing it in person. That said, you can definitely look for apartments online, but just go out and see it first. With both apartments and cars, I found it significantly easier to just deal with and established company. Individuals tend to be super sketchy even when they don't want to be, for example, when I was looking for a used car once I had a guy try to sell me a vehicle that hadn't been legally registered in like 10 years.
I was on a thread here the other day and there was some person talking about how you can get a rust bucket for cheap, when you try to get a cheap car. You'll have so many people trying to rip you off. It's ridiculous. People who don't legally own the car in the first place, people who don't actually have the title to the car.
Then again, I've had friends tell me that you don't need a license to drive, you don't need to register your car, and you don't need any insurance.
A significant amount of America just lives like that