As a Norwegian (not a supporter of Molde), I follow the Norwegian Eliteserien quite a lot. I think these stats from Ole's time at Molde is quite interesting compared to his successor, Erling Moe.
https://www.transfermarkt.com/ole-gunnar-solskjaer/stationen/trainer/7286/plus/1
https://www.transfermarkt.com/erling-moe/stationen/trainer/41529/plus/1
You guys can see the stats yourself, but the short summary is that Molde now is winning more games and scoring more goals with Moe as a manager than Ole.
Ole had a big standing in Molde, but the supporters there often wanted to see him sacked a few times over the years due to underperforming. Molde has maybe the biggest budget and over the years maybe the best overall squad in Norwegian football, but Ole never impressed as a manager there. The time at Molde was quite similar to his time at United actually: No one was impressed by his tactics and ability to make a team progress in terms of playstyle, but he won a decent amount of games due to a decent counterattack and individual performances from his star players.
This Norwegian article from 2019 says the following: "In Molde people have been wanting Ole to be sacked for three years, in Manchester they are so happy because he's their new head coach".
https://www.aftenposten.no/sport/fo...aar-om-at-ole-gunnar-solskjaer-maa-faa-sparke
The time at Cardiff is a chapter that everyone knows of, so the short story is that Ole never had the CV or background to take on a job like this. I know he his the "United-DNA" and you could compare him to Zidane who did excellent at Real Madrid without a large manager background, but Zidane showed that he can win trophies.
Ole has now gone 3 years without winning anything, but he has to be given credit for getting rid of a lot of deadwood in the squad and making harmony again after the years with Mourinho.