Smaller cup?

I got a small lady cup and femmecup. I did a dry run with them and they both stuck out of me when I inserted them. The femmecup the most but the lady cups whole bottom part (cut the steam off completely).
I also could not get a good suction either, the cup kept slipping out of me. I think my cervix is just too low and I really want to use a cup. Any recommendations?