Diva cup help

Hello, I’m totally new to the diva cup.

My partner decided to get me one as I kept mentioning it and how it would be good to try so he got me the post pregnancy one I believe. As I had our baby about 8/9 months ago!

Iv been trying it and I’m not sure if I’m doing it right, little leakage

Finding it hard to “twist” when it’s in, like, how do you do that?! It just doesn’t turn and my fingers are all slippery and ugh!

Anyway, I get it in and manage turning as it’s going in rather than when it’s in in.

I don’t know how far to push in, I leave it so the stork bit is close to the opening but whenever I cough or anything, it moves down! And starts being uncomfortable!

No idea how to do this.

I’m pretty sure it opens up inside as when I had to push it out, it was whole and open.

Anywho! Any tips from you ladies?

Should I give up or keep trying?

Thanks :)