Messi, Ronaldo & Henry were class players who would/can create goals from a multitude of situations. One might also add Bergkamp to the list. And going back further, the likes of Best, Cruyff, Law, Gerd Müller. All top class with many strings to their proverbial bow.
Supply is important, yes, but it's how to deal with the situation once Saleh has the ball at his feet on the right-hand side of play. That is where defenders get it wrong.
I've not talked about 'easy goals', only the method mainly used by Saleh.
"...I bet you're great on football manager though..." Nah, just been watching football for a lot longer than you, I expect, so after several decades of doing so, one does begin to notice certain things in a game (colour purple!).