How do I ask my wife for more intimacy? 51M 48F

First things First, my wife is amazing. She is a great mother to our children. She runs the household and I think she knows how much I crave her not just sexually but want to get to know her more! Yes, even after 18 plus years of marriage.I really want her to open up to me. I ask her questions but have a hard time initiating these kinds of conversations. She is an extremely hard worker and is very routined. We are intimate about once per week for reference but it's not just about the sex. Dont get me wrong I would love more cause I think she is a smokeshow. ;). How do I get her to open up more in this stage of our marriage? What are some easy questions to start with? When we go out on a date we end up talking about the kids and work which is totally fine but I want it to be more like about her and her desires.