Let’s start with the first option. It is possible that you may be asexual. There are many different shades of this term, but the basic definition is lack of interest in sex or less interest in sex than anything else. About one percent of the population identifies this way, so it is important for you to know that asexuality is relatively common and completely normal.
Now, let’s talk about the next option. You are relatively young and have said that you will not describe yourself as a man with little sexual experience. It may take some time to figure out what you like and respond to sexually. Indeed, most people would describe their early sexual experiences as not so satisfying. You may not have experienced the best sex of your life yet, so there is no reason for you to get excited.
If so, then the solution is more exploration and experimentation. For now, I will encourage you to explore your body yourself and try to understand what you like. Do you have a regular masturbation practice? If not, this might be an interesting thing for you to explore. You can also try reading erotic or sex education books and see if you find anything that shows your interest. You can also start creating a list of sexual sections of things you want to try at another time.
Many people have a fairly passive sexual approach, but if you are not actively exploring and trying to figure out what can make you feel good about your body, it will not bring any great benefit. During sex, have you ever caught yourself thinking you want things to be different? Forget this fact and relax your body and mind.
It's all you need to feel the emotions of the intimate act!