A good simulator will help you. Some of the cheap/free simulators will not. Realflight, Aerofly, Reflex XTR are examples of simulators that simulate landings reasonably well. FMS will unfortunately not help you very much when it comes to landings, because the plane flies like it's on rails. (On the other hand it is great for learning orientation etc.)

Every plane is different. Changes in weight, CG, elevator throw etc. will make planes behave differently on approach and landing. Having practiced a lot on the simulator will be of great benefit, but you will still have to "learn" each plane to make good landings. When I go to the field, I usually fly landing circuits for a while, to "warm up". A little practice every flying session goes a long way.

The most important thing is that you have fun and make progress. Other people have different ways.