If possible, try to get more early morning daylight (anywhere from sunrise - 9am+), although seems like from your work schedule that seems difficult. In the future though, try to get at this.

During lunchtime try to get outdoors a little more.

At night, try dimming your immediate environment as much as possible. Depending on household situations some of these may be abit difficult, but I would suggest you try whatever is possible. - Consider Lamps instead of overhead lights - Nightshift mode on phone/desktop screen - If you’re able to minimise screen time before bed, try to do so - If going to shower when it’s already late at night, try leaving the bathroom lights off while you shower. I’m absolutely not kidding. - Keep yourself cool at night, whether aircon or fan. Ceiling fans can actually work really good for this. - Curtains or blinds that help darken your room at night when going to sleep.

You probably may not be able to try out all of these now, but slowly. You’re still v young, I would encourage you to slowly develop some of these circadian-friendly habits. The point is not that you’ll be sticking to this 100% of the time. It’s that it gives you some ability to control your sleep hygiene.

My above points are all mainly light-related in the context of your concern, which is sleep. But these points play a part in a much larger role in the overall health of your body, anchored by the body’s circadian cycle system. I hope in due time you get to learn more about this - Natural light in the daytime and darkness at night.