Red-Eye Reduction Lamp Is not Work and I cant adjust my lenses easely my camera is nikon F80 and I Have Nikon Lenses 28-100 & 70-300

I own an F70 with similar lenses. I am not fully familiar with the F80, and therefore can't be sure what I am saying will halp, but I believe it is the next model of similar specs as mine. However, from your description, I think what you are saying is that the little red light that flashes, before the photo is taken and when you have the flash mechanism up, is no longer working, and that your camera is haveing difficulty getting a fix on the focus in automatic focus mode?
This red light is not the 'red eye reduction' flash, but rather a red light (so it doesn't make your subjects blink / squint too early) that helps the camera focus: Auto focus mechanisms need light too. If your light has stopped working, then that would explain why the camera can't focus. This should however only occur in low light conditions.
Fixes:
-Obviously, if it's still under warranty - take it back.
-Get it repaired
- OR if that's going to cost too much or you were thinking of doing so anyway, a dedicated flash unit MAY solve the problem. Most flash units have there own red light to aid autofocus. At any rate, you could take it in to a store and test a flash unit in-store to see whether it helps with the problem. If a dedicated flash unit didn't help (make sure you try it in a dark room - ask them to take it into a back room and try it) then it might suggest another problem such as: the camera is failing to send the signal to the red light to flash rather than the light not working. After all, the red light would be an LED, which have extremely long lifespans.