Moving away from Bugzilla to anything else means getting nothing but a bunch of vague bugs from people going "it doesn't work - FIX IT".
That's why Bugzilla asks for all the info that it does... because while the user may not understand the relevance of all the info, you never know when the developer might pick out a bit of info that makes things so much clearer to him.
If there's anything you don't understand, just leave it alone and someone else such as Andre will come along and fix things or ask additional questions to fill in the blanks.
Bugzilla just looks intimidating until you understand a little bit more about how bugs are fixed and documented. I know it's somewhat intimidating at first, but once you've entered a bug or two and you get a feel for it, you'll see it's not anywhere near as bad as you've been saying.