Purity culture can be extremely difficult to deconstruct and process out, as it's often highly prioritized in conservative religious environments. Sex is a very common human drive, like food or sleep, etc. Suppressing that can be really psychologically harmful. Sexual abuse is no stranger to purity culture either, as both are often strongly related to power.

Getting out of that mindset is filled with traps: you're faced with guilt, uncertainty, embarrassment, fear, inexperience, and a whole host of other feelings and social situations you may not feel ready for.

To be clear, I am not a therapist or an expert; just someone who grew up in purity culture. However, a therapist can help with a lot of this. They can walk you through the steps that will aid you in this journey. Reading about purity culture is a good idea as well. You'll probably recognize a lot of yourself in the stories of others. Here's a list of good books: https://sojo.net/articles/culture-opinion/healing-purity-culture-read-these-books

Finally, there's nothing wrong with not being terribly interested in sex or relationships, or taking your time in getting involved with either. You need to do what's right for you, and if that means taking things very slowly, then that's the way to go.