The main aim of signing Ronaldo for Juventus was clearly to win the Champions league, which they didn’t achieve. I see this as the main reason why people claim Ronaldo wasn’t a good signing for Juventus. As well as him being one of the main reasons for Juventus’ economic issues.
No. He never made it back to ucl semis or won another ballon dor and prior to that he was close to catching Messi. Despite his impressive stats while playing for them, Juventus style of football does not fit Ronaldo and his preferred style of football which is up-tempo and fast paced. He was better off staying in Madrid for another year or going to a team like Psg, the only problem on that team would be the egos and Neymar care-free attitude but under the right coach they would be more successful than juventus were in the ucl.