How old are you? Are you 13 as your username suggests?

Different women have different levels of libido. Some of it depends on hormone levels, stress, amount of foreplay, chemistry with the other person, etc. Sex can be a walk in the park for some people, but for others, it might just take a while before they get the hang of it.

I know it's a funny thing, but most people in their 40's will experience more pleasurable sex than someone in their 20's.

Some women never orgasm. Some will have one and later might not have one. Even if some don't, it is the connection with the other person that they should concentrate on, not the height of pleasure they receive.