headlight on 1996 Isuzu Trooper

my headlight is dimmed and I don't know if it's a bulb or the whole headlight that needs replacing..and how do I get it out? I've tried to see how to do this but can't figure out how to get the bulb out

2 answers 2 comments
You should be able to access the bulb from behind the headlight assembly and usually you would grab the plug and turn it 1/4 turn counter clockwise and it will pop out
Thanks, got it out but now I can't figure out how to get the bulb assembly out of the holder...and the bulb seems to be working so why is my headlight so dim?
Find a fix for the dim light??
The new bulb is not a fix ? Next.