Guardiola did, though, state that Dalot should have received his marching orders in the opening exchanges. The Portuguese full-back caught Doku with a knee-high challenge with his studs, but despite VAR looking at the challenge, Taylor's decision to brandish a yellow card was deemed acceptable punishment.
"It's a red card but it would be poor as a manager to analyse that as the reason for [losing] the game - it is what it is," Guardiola added.
"For 85 minutes 10 against 11 I believe, but if we played with the energy that we did, we were nowhere near that. I could say that and blame [the decision], but we will not grow up and move forward."
City will look to bounce back when they face Bodo/Glimt in the Champions League on Tuesday, before focus shifts to their next Premier League outing against Wolves. United, meanwhile, travel to table-topping Arsenal in next weekend's headline Premier League clash.