If you sprain your ankle, you will forever have a weak ankle because sprains do not fully heal. You have stretched your ligaments, and they will never be as springy as before. As you know, it is very easy to sprain your ankle when playing volleyball, usually from landing on someone else's foot. You can prevent a sprain by using tape or wearing ankle braces. Taping is often more effective than ankle braces, but applying tape is time-consuming, and it's hard to tape yourself.
Ankle braces prevent ankle sprains.
After several ankle sprains, I decided that high tops were not good enough and tried the Active Ankle. It's just about impossible to get an inversion sprain while wearing the Active Ankle. I find that they give good support while providing decent freedom of movement. You won't notice them after wearing them for a month or so. If you have sprained your ankle, you should wear an ankle brace.