I can understand your concerns. If you play a really specific genre as a DJ, there are sometimes not that much people in to that music. In your area. But across the world there are lots of people who like that specific genre. So can use the internet to connect to those people. So I would say the same thing to you as Phil said to that 52 year old DJ on the blog. Use the internet to gather followers. You can post mixes on the internet, do a live stream once week. Things like that.
But you should also think about what you want to accomplish as DJ. What are your goals? Do you want to play at parties, weddings or maybe throw your own parties. Do a little research. Are there radio stations in your area that play the music you like. Maybe you can approach them. And if you want to know what students are in? Also use the internet. It depends on where you live.
Think in possibilities, not in impossibilities. Good Luck with it all 😀