Yes, he gave good evidence with 3 goals. Man City was destroyed with possession. Man City were ineffective so they lost. Losing and failing to qualify for the last 16. It seems that this is Pep's first bad record during his time with Man City by not qualifying for the knockout phase. Man City's defense is bad, I think Khusanof can run fast but he failed to compete with Vini and Mbaape. But the injury problems of Haaland and Stones seem to affect the team's condition. It seems that Madrid is a little lucky because Haaland and Stones are injured.
It could be that when Haaland and Stones are not injured the game pattern will change a little and maybe the match will be much more competitive, but that's how football goes because sometimes teams get momentum to show their best results and Real Madrid again showed themselves as one of the big clubs that have experience in the Champions League and they took advantage of Man City's weaknesses to get a full victory at home.
Mbappe was at his best in the match because he managed to do a hat-trick in a big match like this, which is an extraordinary achievement. But this has not shown his best quality because he had to be present when Real Madrid needed a differentiating figure in a more crucial match.