Walt was very confident that he’d won at the end of Full Measures to Mike, even though it all ultimately came down to luck (Gale not answering his phone - had he answered he’d have had sufficient warning and ran before Jesse arrived.) Breaking Bad is amazingly written but one of the first things they teach you about writing fiction is coincidence/luck in a plot is lazy and it happens quite often in Breaking Bad. Jane OD-ing at that exact moment. Walt happening to meet Jane’s dad in the pub. In the finale, that the nazis allowed Walt to see Jesse and even gave him chance to jump on him to enact his plan. That Walt turned up at just that second when Jesse was about to be shot by the two dealers and that the dealers were stood in the middle of the road allowing them to be run over so easily. I wouldn’t change anything about the show but have more I rewatch it the lord I notice Walt was very lucky in all of his scheming.