?
Everybody.
I start from that premise and am always pleasantly surprised whenever I happen to be wrong. :-)
Better? At what?
Whatever subject or discipline one chooses, even the best in the world cannot be sure someone, some place can beat them at their "game".
So, the moral of the story ...., it is reasonable to assume that there is someone who is better than you, but do not let that stop you from doing your best, because that makes you a winner!