I agree with you about your comparison between Zidane and Guardiola. Zidane has an aura and players respect him more for his achievements as a player himself than as a coach. I know that he won the Champions League three times, but a lot of coincidences have led to that winning streak as well. It wasn't because Real Madrid dominated the Champions League throughout the knockout stages. It was in quite some games the case that they were the team with a little bit more luck than the others. Taking home three titles just like that will probably not happen again anytime soon. Guardiola is a real coach. Nobody talks about him as a player anymore whereas when I remember the name Zidane, I instantly think about him as a genius player, not as the coach who won the title three times.
Zidane spoke separately about winning the Champions League three times in a row and he claimed that it was the result of his hard work (which exhausted him and deprived him of sleep), and no luck. I agree that there is a share of luck everywhere (in fact, this is just a variance of a random variable, speaking in the language of mathematics), but the strongest are lucky and you should not underestimate other people's merits
I am not underestimating other peoples' merits in the slightest, but don't we agree that goals like these won Zidane the Champions League? Also watch this one at the 2:00 minute mark. I am ready to receive and have a look at counter examples where the referee decision was clearly made against Real Madrid and cost them the game. But I tried to find a summary of decisions that were against Real Madrid and I couldn't really find something that was blatantly obvious against Real Madrid and decisive for the game end result. Almost all of those decisions that led to Real Madrid advancing through goals and red cards would not happen these days with the VAR. Almost none of them.