Menstrual Cups!!

Crazy Cat Lady • 23 |Vegan 🌱 | Dog Groomer 🐶 | Animal Lover ❤️ 🐱🐷🐄 | Hippie-ish ☮️
So, I have had a menstrual cup for a while and I have not been able to get it to work for me. It simply will not "open" or unfold when it is in so I can't get it to suction. 
I need a more firm cup. Any experienced cup users know of any brands they can recommend for me? 
Would help tremendously!! Thanks im advance. 😊