[Sexual communication] How to talk about sex and your desire with someone when you don't have experience

With time going I noticed that I have a very hard time talking about this with women who engage the conversation about this. I have no sexual experience with someone and got out of a relationship with someone who had a strong sexual drive (she would often talk about this, make picture/video of herself). The fact that it was such a big part in her life was not the problem, the problem was that I never was able to talk about sex, about what I could like or want for example. I often feel that if I start to talk about this kind of thing without experience I would lie. Before this relationship, I knew someone for a few months who was like that too (big sexual wants). Sometimes they would push the conversation to this and I never knew what to do or say.