There are a few reasons why Ronaldo has never won a World Cup. One reason is that he has never had the opportunity to play in the World Cup, as his national team, Portugal, has not always qualified for the tournament. In fact, Portugal has only made it to the World Cup seven times in its history, with the most recent appearance being in 2018.

Another reason is that, even when Portugal has qualified for the World Cup, they have not always advanced far in the tournament. In the 2018 World Cup, for example, Portugal made it to the Round of 16, where they were eliminated by Uruguay.

Additionally, Ronaldo has faced stiff competition from other talented national teams and players. The World Cup is a highly competitive tournament, and it is difficult for any one team or player to dominate consistently.

Finally, it is worth noting that winning the World Cup is an extremely difficult feat, and it requires not only individual talent but also strong team cohesion and the ability to perform under pressure. Ronaldo has undoubtedly had a successful and decorated career, but winning the World Cup is a challenge that has eluded him and many other great players.

In conclusion, there are a few reasons why Ronaldo has never won a World Cup. These include the fact that his national team, Portugal, has not always qualified for the tournament and has not always advanced far in the tournament when it has qualified, as well as the tough competition from other national teams and players. Ultimately, winning the World Cup is a difficult and prestigious accomplishment that requires both individual talent and strong team cohesion.