Dude, come on, there a million body cam videos of people being shot on YouTube. Very few of them show pools of blood (like in the movies). You might get some smearing on the hands, but often the ground under them is pretty clean. Now if someone gets thrown out a car or falls off a motorcycle, that creates a lot of surface area of blood leaking and that can be messy. But one hole can get blocked by internal organs or clothes. Also, remember that you are not full of blood. Your organs aren’t suspended in liquid blood.