Welcome to RVF,
@Livyroses20; glad you are here.
If your RV will be exposed to freezing temperatures, you most definitely need to winterize it. That involves
draining the fresh water tank (rather than putting antifreeze in it),
draining the water heater tank (be sure to turn off the electric heating element before draining) and either
running antifreeze through all of the water lines or
blowing them out with an air compressor. You also need to put a couple of cups of
antifreeze in each sink and shower drain. And, of course,
gray and black holding tanks should be flushed with water a couple of times and fully drained.
An alternative, if you have a source of reliable electric power is to keep the RV heated with a space heater to about 50 degrees to prevent freezing. Just realize that if you do it this way and you have a power outage, things can start to freeze up within a few hours without heat.
TJ