2016/17-2017/18 Cristiano is not peak Ronaldo imo, he had bad starts to both seasons and had already started to lose his chance-creation abilities, his ability to defeat defenders and his dribbling. He mainly became a finisher. It is often considered his best season due to clutch moments, but if you remember, 2017/18 Real Madrid played pretty badly until the final stages of the UCL and finished 17 points behind Barcelona. Many of the problems that Ronaldo has been suffering from since 2022 started in 2017/18.
As a complete, 90-minute footballer capable of dictating matches, dribbling past low blocks, creating for others, and maintaining relentless league dominance, the 2011–2014 version of Cristiano Ronaldo was superior in every physical and statistical category. IMO, Cristiano Ronaldo's peak is either 2011/12 or 2014. 2011/12 CR7 was basically a lab-created player who had ridiculous stats and won the League against peak Barca and Messi, and it is not considered his peak because Messi reached godhood levels that season. He also would have won the UCL if not for the penalties against Bayern. 2014 Ronaldo also had an insane season and was casually banging hat-tricks every game.