You have a ball in substandard conditions and why if I may ask do you keep it in a closet (feel free to not answer that if it is personal but it may help to better understand your situation and why you are keeping a ball in substandard conditions).
There are both care guides and tub setup guides you should read to gain a better understanding of the minimum steps you need to take to keep your ball healthy and alive. I mean no judgement against you but if you can't provide those minimums, the ownership of this snake might be something to reevaluate. You will unfortunately need to invest some money in the care of this animal or you risk losing it or it spiraling out of your ability to care for it.
Fro starters, this is the best low cost thermostat you can buy
https://www.amazon.com/gp/product/B000NZZG3S
This is a wonderful low cost humidity and temperature gauge that will allow you to view your conditions without having to open the enclosure to view the readings
https://www.amazon.com/gp/product/B01M252EWA
Two hides will help to have it calm down once you get your temperatures under control.