I agree with all the points.
I usually stay away from outside food, due to the way they are prepared. I usually avoid Shawarmas, Ice Gola, Bun Kabab and any outside stall stuff because of germs from using dirty hands and flies stick on this stuff.
I even avoid certain restaurants like KFC, because of their poor quality.
I don't even try stuff from these unknown restaurants, because we don't even know how the staff prepares it.
Do not eat from every restaurant, eat from the ones you usually eat from.