The 34-year-old joined Juve from Real Madrid last year in a deal worth €112 million ($176.77 million) and has marked his debut campaign at the Old Lady by scoring 26 goals in all competitions, 19 of them in the league.
Despite the five-time Ballon d'Or winner's arrival in Turin, Juve fell short in the UEFA Champions League once again as it suffered a shock quarter-final loss to Ajax.
Ronaldo sees 2018-2019 as a successful campaign overall, however, capped by confirmation of an eighth Scudetto in succession with a 2-1 win over Fiorentina, adding to their Supercoppa Italiana triumph against AC Milan in January.
"In my opinion, it was a very good first season and I adapted well. We won the Scudetto and the Italian Super Cup, which is certainly not easy to achieve," Ronaldo said.
"It was a year of success, we are happy. You can't win all the time. We felt that we could do more, and we wanted to win, but only one side can win the [UEFA] Champions League.
"Next year is a new page, the fans all want it and so do we. It is an important trophy, but it's difficult to get there in this tournament. It's a positive group and I believe it has been a good season."