Manchester United will need Ronaldo's contribution in the remaining games as well to be able to qualify from their group easier. He scored an important goal against Sheriff Tiraspol to increase his passion to show a good performance in the coming games. But he really needs his finishing skills back as soon as possible. He wasted some really nice opportunities in that game and he was able to score thanks to a penalty. This is enough for people to mock Ronaldo about his scoring mostly by penalties. He is a legend anyway but I hope he continues to score different kind of goals more often.
Man utd are not really relying on Ronaldo just like they were last season, it's different now, he's not even on the starting lignup of some matches, and they did fine in some of them, in the Europa League they just have to be decent, they don't need to be good against teams like Sheriff and Omonia, second place would be enough for them, it would be easier if Sociedad beat Sheriff though.
Whether they rely on Ronaldo, or they dont,till tomorrow,Manchester United will still need a man like him because even at his worst form,he is still better that most players at United.Recently,Ronaldo has not been in his best form,and I believe that is because he is unhappy at the club,he made a decision to leave the team because they are not playing champions league football,and his move was blocked by Man U,so ever since then,his performance dropped,but I believe he is now playing well,and will soon get to his best form.If Ronaldo should start a good run of form,then Manchester United will be so happy because he will score goals more regularly,and will compete with the highest scorer in the league.