There is to be an issue here bro the player knows about the odds and then he still bets meaning he knows the risk here so it is part of the game in my opinion. and if you ask me how a good gambler should avoid such mistakes? the answer is there is no mistake here it is just probability and then he chose it from the beginning.

Although 1.4 Million USD is definitely a lot of money but just imagine if he win he still make a decent profit there haha