Hello!
My question is that I have a Spotlight attached to my character as a flashlight, and I want to make this Spotlight a bit more realistic. So for example, if our character is walking or running, the spotlight should start to shake the faster our character walks.
Thanks in advance! 
You will probably need to make some adjustments but check out a quick tutorial here below:
First attach your flashlight to your character:
Then put the head in the parent socket.
Adjust the position and you’ll have a flashlight that moves according to the character.
You basically put the flashlight attached to your character’s socket and that alone will make it react to his movement.
I already use it on the head, but on the left or right hand they also bring good results.
Thank you very much for your reply! However, I have an FPS character, so what should I do?
When your character walks, does the camera shake? In that case, just grab the flashlight and attach it to your character’s camera.
If not, you need to create one, take a look at this video:
