feeling very discouraged

Cow
I tried to put my diva cup in...and it just isn't working. I don't own any lube just water. That's all I'll have to deal with. Unless something very common (not coconut oil) also works. Not water either that's not working. I get it in a tiny ways and then it just hurts. And won't go any farther. I'm very discouraged. I would appreciate some tips on this