The City boss pushed the cameraman and grabbed his headphones at the end of the game but admits that he is "ashamed" of the way he conducted himself.
Guardiola said: "I apologise. I feel embarrassed, ashamed when I see it. I don’t like it. I apologised after one second to the cameraman. I am who I am. After 1,000 games I’m not a perfect person, I make huge mistakes. It’s not about that. What is for sure, I defend any team and my club, that’s for sure. The reason why is I want to defend my team and my club."
The coach also confronted Newcastle midfielder Bruno Guimaraes after the match but believes he did nothing wrong in that instance.
The Spanish manager said: "We have known Bruno for many, many years and every time after the game, even at the Etihad, we talk in the tunnel or wherever we talk, always.
"I don’t know what happened. Our paths always cross and I always have a good relationship with him. I love it. I’m an emotional guy, I love to talk and move my hands and my arms and everything."
City entertain German side Bayer Leverkusen in the Champions League on Tuesday (25.11.25) and Guardiola says the game is a "final" in terms of the club's hopes of finishing in the top eight of the league phase and securing a direct route to the last 16.
He told TNT Sports: "We are in a good position in terms of that but I think (Tuesday) is a real final.
"(Tuesday), and especially the two games at home. If we are able to make the six points at home and take something away in the last two games we have, we’ll be close to qualifying in the first eight."
Guardiola knows that a top-eight spot isn't essential but would rather City had a more straightforward path through the tournament.
The coach said: "PSG finished, I don’t know, 13th or 14th [15th], I don’t know exactly but not in the first stage [last season] and were the champions.
"It’s important to qualify, in the first stage is better because the club earn more money and we have no one round - you go direct - which is so important but [what is] important is you go through and that is the key."
