the chances when playing one on one are often far less than other players

in the last few matches I played, my basic chances were too much but when I saw the ovr of my team and the enemy team, the comparison was not that far, for example in my last match a few minutes ago, my team's ovr was 113 and the opponent's team's ovr was 112, but why did my basic chances have the most?, and while the opponent's team had good and great chances a huge amount