Ngannou should move on and keep the energy firing up ahead his future is just ahead of him and he would achieve more than this denied of him if only he doesn't let it weigh him down. It's not easy been denied of what you have spent time and energy enthusiastically training for and at the end this is what the boxing body in charge of the match could give as a decision.
We know who Tyson Fury's next opponent will be, but who will be the next for Francis Ngannou? Many boxers will be afraid of him because he was able to knockdown one of the greatest boxers still in the sport down with a punch. Many boxers will not be able to get back up and will not be able to go all rounds with him because of how aggressive he is and the power of the punches. Had Francis Ngannou knocked out Fury, the judges who decided the game on split decision will not have had the chance to judge the game in Fury's favor even when the winner was very clear.