Hi, It's not your fault or the games fault, just some people not used to hypnosis can make you dizzy, exhausted or anxious especially if you have a pre established medical condition. I used to get anxious too when I did hypnosis. You probably need an induction specifically crafted for you for it to work and this game isn't intended for everyone nor the induction style or atmosphere. It is a recreational hypnosis game, so its not medical hypnosis. It's best you research hypnosis before you do it because not knowing how it works will affect how a session works later on. I hope you feel better.
I didn't intend this game for people new to hypnosis but it so happened it was the majority of people who played it.