Pep made the right changes. They came late, but they almost certainly prevented us from losing the game.
With a better front three we win the game comfortably. Usually the defense is to blame, but not today. Their chances came from our three attackers and Foden giving the ball away repeatedly. If they then can't put the ball in the net then we're always going to have difficulties winning games. At no point did Mahrez and Torres seriously threaten their goal. That is just not good enough for a team that wants to be winning things.
With a better front three we win the game comfortably. Usually the defense is to blame, but not today. Their chances came from our three attackers and Foden giving the ball away repeatedly. If they then can't put the ball in the net then we're always going to have difficulties winning games. At no point did Mahrez and Torres seriously threaten their goal. That is just not good enough for a team that wants to be winning things.