My nikon d5200's flash isn't working anymore?

Okay so for starters, I'm not really a professional with cameras yet. But I'm trying my best to learn more
Anyways my camera was working perfectly well and then all of a sudden, my pictures come out really dull and the flash doesn't come on anymore on any of the modes. Not P or M or A or Portrait or anything, I thought maybe this happened because of my friends snatching the camera to see the pictures so they accidentally pressed some buttons which may have caused this. But then I searched it up and I think that means my flash is just not working because the light's burnt out? I want to make sure before I go to some specialist and repair it. So any opinions?

In the future, protect your camera for "friends".

You can manually open the on camera flash and then make sure that your shutter speed is 1/200th second or slower and make a test shot.

Unless you attempt to machine gun your camera using the on board flash, you will probably NOT burn out the flash tube in the camera.

For your piece of mind, take the camera to your local camera shop and have them look at it.

IF for some reason that the flash is no longer functioning, then contact Nikon and have them repair it… Your camera has a one year warranty for just such failures