I'm horny and having bad sexual desire

Recognizing needs in a positive/ negative light is a matter of perspective. You're 26 years old and sexual satisfaction is your body's basic need, biologically speaking. At this point, you can take sometime to reflect on your views of sex and intimacy. How appropriate it seems pre/post marriage and your take on hook-ups as well.
In my opinion, there isn't so much a right or wrong decision to be made at this point. It's more a question of what your need is at this stage in your life and what can be done to fulfill it.

Whether it's a full fledged relationship you're looking for along with intimacy or just need your physical needs met, it's important for you to first figure out what it is that you want before deciding if it's good/ bad. It's natural to want satisfaction, companionship and experience closeness. The recognition of your needs is an important factor as a human being.
Explore your views and needs and then brain storm possible solutions to meet these wants and needs.