Menstrual cup leaking

I just started using a menstrual cup. I love it! However, it seems like when I wear it during the day, it starts to leak after an hour or two. At night it is fine and doesn't leak. I don't know if it is because I'm moving around during the day or if I need to empty it more. I don't know what brand it is. I just bought the ones that were offered by just paying shipping and you get a big and a little one. I'm using the little one. I've also been told I have a slightly tilted uterus, so idk if that would affect anything.

Also, none of the folds seem to work. I can get the cup up there, but then it seems like it doesn't want to open very well. I've tried the c fold and the push down one.

If anyone has any tips, they would sure be appreciated. 🙂