Well you can start with a simple system for standard middle of the road type tickies that gives a predictable result and is pretty easy to vary from for exceptions. If you know where the ball is going to start with you can change one or two variables instead of changing all of them at once.
A youtube channel on three cushion systems. Dubbed in english.
Enjoy Folks
But all system talk is heavily frowned upon here. The only answer you'll get here is FEEL. Just spend a few hundred hours practicing tickies to the exclusion of all other types of shots and you'll feeeel it, easy peasey.