whey protein

Is whey protein more suitable to human body than protein from the meat
source?

Is it a good idea to cut down on meat intake, especially red meat and
use the whey protein powder or nutritional powder with protein from
whey source?

What if no meat (unless one craves for it) and just use fish and whey
as protein source? Would it be OK especially for a petiie female who
wants to hit the gym and build some muscle tone and strength via
weight training?