The Portuguese icon recently endured a six-game goal drought, but is still the club's top scorer.
After re-joining the club in the 2021 summer transfer window, hopes were high that he would spearhead the Red Devils to their first Premier League title since 2013.
However, things have not gone to plan in Manchester with the club sacking manager Ole Gunnar Solskjaer and, under interim boss Ralf Rangnick, fighting for a top-four place rather than going for the crown.
Currently, Ronaldo has scored 15 goals in 30 games in all competitions, however only nine have come in the Premier League in 22 games.
It's been a poor campaign so far from the Red Devils in comparison to where they used to be during Sir Alex Ferguson's reign.
However, the former Real Madrid and Juventus star has hit out at the doubts over his future and insisted he is satisfied with his current output in the team.
"You have to be intelligent and know that at 18, 20 or 25 you are not the same as at 35," Ronaldo told DAZN.
"That is the maturity, the experience, the intelligence to understand that maybe you lose some things to win others and have balance right to keep competing and be at the highest level.
"That's not easy, but it seems like it to me, because I show year after year that the numbers speak for themselves.
"I don't have to tell you that I'm very good, because the numbers are there. The facts are facts, the rest is not. It doesn't matter at all.
"That's why I'm very happy with my form, I'm still scoring goals, helping people, teams, both in the national team and at Manchester United and that's why I want to continue like this."