There are different ways to contact Cristiano Ronaldo, but none of them are easy. You could try to meet him in person at his hotel, but you would need a lot of money and luck. You could also message him on social media, but you would need a very catchy and appealing comment to get his attention. The chances of him replying are very low, so don’t get your hopes up. Another idea is to contact his official website, email, or phone number, but these are probably managed by his staff and not him personally. However, you would still need a good reason and a lot of persistence to reach him.