if you are above the glidslope you push forwards and if below, you pull back.
You neither push nor pull. The control column selects attitudes, the trim controls maintain that attitude and the power lever / throttle selects thrust. Both attitude and thrust are used in order to achieve the desired result.
This thread must be one of the worst I've ever read on PPRuNe. It confirms that the vast majority of civil pilots posting here simply didn't understand their training, or that their training was cheap, nasty and inadequate.
If you wish to understand how to fly, don't listen to some keyboard warrior or computer toy player - go and find a good FI!