Improving offseason

I’ve been playing volleyball for 4 years, and recently ended up making a team at my high school (despite it being the worst team).

I’ve never played in a club because of how expensive it is. I know there are things I can do to pay for it, but by the time I found that out it was already too late to try out. I’m on freshman B right now, but in order to still play next year i’d have to make JV or varsity. Once the school season is over, how do I practice without being in a club? A lot of people say you can work on your skills at home, but my ceilings are extremely low and my ball blows away if I try to do it outside. Is there any other way?