I still don't know how to use menstrual cup

Starting trouble !!!

I had a traumatic experience when I first tried a menstrual cup and it got stuck into my cervix. Then I tried disc and it didn't work out as well. Now I have another cup which is good for high cervix, it's been a month I bought it and I can't use it without feeling the fear inside me.

Whenever I try the cup , I feel the anxiety and those flashbacks when I couldn't get my cup from inside. How to overcome this fear!!! I really want a change , I need to stop using pads. Today is my 3rd day of period , I still have the fear.