Sexuality and sensuality can become complicated; the body plays a small part, but most of it is typically in the mind and mind-body interplay. There's a reason the elbow-lickers can get off on it, and it's not typically because their elbows are wired more sensitive.

Having sensation is proof that your physical parts work, but I hear you say that the connection to pleasure and your lust/sensuality is gone.

Luckily, that connection can be trained and/or rehabilitated (depending on cause of disconnect).

A major part of it is feeling safe, safe in your body, safe to feel pleasure, safe to play/explore, safe to find and act on what you enjoy. Anything from trauma, stress, depression/illness, self image, cultural pressures can make someone enter survival mode and block off enjoyment. Some are best treated by a professional, others might be addressed by simpler inner work, like setting intentional time for recreation, or making space/time/rituals for enjoyment, etc.

Part of feeling safe is also to not have undue pressures to perform or feel a certain way. Especially while rediscovering how you sense and process pleasure, you should give yourself the grace to enjoy yourself as you want. Maybe elbow stimuli is the only way available to you currently? Maybe the only way to silence the self judgment is with kink? Respect your journey, and that we all take different paths, as well as need different things along it. The goal is both to find yourself, but also to learn how to search.

Oh, and as to not misrepresent anything: Most of sexuality happens in the mind, and finding what turns you on and how is typically a life long pursuit as tastes and wonts will change and evolve with you. What happens and yearns in the body is typically in direct response to both fantasy, self image, intent, and your daily form. You will need to explore, discover and play what is sexy to you, as well as when and how.

Besides that, it's also about training yourself to explore pleasure both physical and mental, how to dance with it, follow it, challenge it and to recover from either intensity or getting lost. Most of it is just finding how it works and feels, but you can definitely get better at both control and constitution with practice.

You have many years left to enjoy the pleasures of your own body, and I would argue pleasure is necessary for a well lived life. Perhaps looking up a sexologist or similar resource could be a worthwhile investment for a life with pleasure?

I'd like to recommend the book The Erotic Mind by Jack Morin, it's a very good book on the topic of how lust and pleasure happens in our minds and an interesting read. It's not a substitute for therapy though, neither psychological or sexological.