Has anyone used Aniball to prevent tearing during birth?

I saw an advert on Facebook for Aniball, which is supposed to prepare you for labour by exercising / gently stretching your vaginal walls. It claims to decrease the chance of tearing drastically. Has anyone had any experience of using this? Did it help?

It says to start using from 36 weeks, which for me is next week. I had an emergency C section with my first because baby was back to back, labour didn’t progress and I now have very little confidence in my body’s ability to push a baby out. I’m willing to try anything to prep myself this time round 😓