Having star players, of course, does not promise the team will have a good performance, just like Ronaldo at Manchester United, this season Ronaldo has put all his ability in helping Manchester to win, but Ronaldo hard work has not been able to make Manchester United better because Ronaldo is like only working alone in a team, Ronaldo good performances are not supported by good performances from other players so no matter how hard Ronaldo tries of course he will fail, I think in this case Ronaldo has shown his capacity as the best player in the world even though Manchester is down but Ronaldo is still able to show good performance individually.
Individual performance will not be able to beat the opposing team, so solid teammates are needed for the goal of winning in every match, but individual performance like Ronaldo can be relied on for the goal scoring part because he has the ability to do that and his running speed factor is unquestionable.