In my opinion, there are two factors that are working against Ronaldo right now.
One of them is his age as the guy’s 37 right now and his body can only do so much for himself at this top level of football. As a matter of fact, the Premier League is an extremely physical football league right now, so playing there at the age of 37 and expecting the best out of him is a no-go.
Another factor could be the fact that he would like to play in the Champions League but is unable to do so. As a result of the fact that he wanted to leave United because he wanted to play in the Champions League and now he is not getting the opportunity to play, his morale has dipped and is affecting his performance.
Regarding the first factor, the age problem which has reached 37 years is indeed old enough for a football player. but ronaldo's stamina is still above average because of his healthy lifestyle and good at keeping his body proportions. but it can't be denied anymore, the problem of age also results in a decrease in body condition that can't be avoided because Ronaldo is not a robot.
and the second factor about him continuing to want to play in the champions league is certainly the reason ronaldo rejects many clubs from outside the champions league. but some football clubs that play in the champions league do not dare to bid on ronaldo because the salary that ronaldo pegs is still very expensive. that is the main reason why he is still at Man United, even though Ronaldo doesn't want to be at the Red Devils club. ronaldo is in a dilemma about his future and where to play.
You are correct. I think that Cristiano Ronaldo is one of the fittest players in the world of soccer. Despite being 37, he is still in better shape than many of the younger players today. At Cristiano's age, it is rare to see so many players perform at this level with such consistency. And I also agree with the fact that his high salary has become a big problem. This is because if I think about it from the POV of a club, I would rather buy a younger player than pay a 37 year old Cristiano Ronaldo.
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Cristiano Ronaldo is one of the best player we have in our present football age and he have gigantic trophies to his name and gallery. He is big name and playing in the Europa league this summer doesn't gurantee him a single title because that's no match for the G.O.A.T. Cristiano Ronaldo is still active on the pitch and can deliver his team Manchester United. There's no time in his side as he would reduce his actions not to get injured, I think his time is near for retirement and this is probably his last world cup he will feature for his country Portugal.
I'm pretty sure it's in his last world cup to play against Portugal. He is 37 years old and will be 41 in 4 years. He will probably never see the world cup again. He will show all his strength with Portugal to become the champion, but his opponents are very strong. On the other hand, I am confident that Manchester United can rise to an important position in the European league. They can see semi-finals or finals and Ronaldo can be an influential name here.
I think that Cristiano Ronaldo still has about 2 years of peak form for football. So, I think you are right that this might be his last World Cup playing for his nation, Portugal. He will not be able to play the way he does now when he is 41 years old. I just hope Manchester United can support him in getting a better position in the Europa League. I have to say that Portugal will face fierce competition in this World Cup as there are many talented teams this time around, including France, Germany, Belgium and so on.