I just found out that if your mac can't take screenshots or check coordinates, etc. this is the right buttons to do them.
The "fn" key is all the way on the left bottom corner of your mac.
Below are the keys to do these things on your macbook

hold fn and press F1 to get rid of everything on your screen example: hand, bar at the bottom of the screen. do this step again to put it back to normal.
hold fn and press F2 to take a screenshot.
hold fn and press F3 to show your coordinates. do this step again to not show your coordinates
hold fn and press F5 to change the view of your person. keep doing this step till you like the view of your person
hold fn and press F8 to make your head move slowly when you move your mouse. do this step again to put it back to normal.

Thanks, and I hope you like it! :)