In short, yes, they do. Some more than others.
All firearms will develop a buildup of carbon and fouling from use, and will eventually require cleaning.
There are thousands of entire books about pistols. You need to ask a more specific question.
no
S&W makes and has made many pistols in 9mm. To answer the question one would need to know the model number, condition, has the pistol been fired, does it come with the box and original paperwork and more.
You need to mow and weed your lawn. This doesn't need to be done to maintain your carpet. You might choose to clean your carpet regularly.
Keep its cage and bedding clean. Provide ample water and food. Most of these will do what they need to stay healthy on their own.
you need laces on your chin and a sword and 2 pistols
Of course. You regularly need to clean your body after exercise. But don't stay in to long; hot water can raise blood pressure.
victor who? Need more information
need help
Any medication you take regularly, of course. Then you might need pain relievers and or anti inflammatories for people who are injured. You might also need antibiotic ointment for injuries and things to clean and dress wounds.
water pistols