The most important thing he got is the motivation he has because any player will lose motivation for having good performance time after time when they get older but Ronaldo is a different player with more power and as you said he even doesn't not suffer a bad injury and maybe that's all because of the playing style and file and the training he has in the team, otherwise he could get retired years ago like many other players.
I think it is related to someone's personality. Ronaldo still has a motivation to play with his best because he is a typical person who always wins every competition he joined. He has a winning mentality, he doesn't want to play like an average player. He wants to be the top scorer, he wants to win a trophy, and he wants to create a new record. It is what Ronaldo always thinks in his mind. So, he never lose motivation in his life.
Yep. Ronaldo very rarely get injury because he has a good lifestyle. He also did regular training and never forget to keep his good fitness. Most old players may not really care about his matters, they think they won't play a longer time. But Ronaldo will always think to play as long as possible. That's why he keeps the motivation to keep his physical as well.
Ronaldo always keeps himself motivated and doesn't even think about giving up, he continues to prove to everyone that his abilities are still worthy of continuing to play football and being a tough rival for other young players. Because he is the only one who looks older, which doesn't make his potential fade but still continues shone until he was already old and he has always been a motivation for many other football players who hope to be like him who has won many awards and now he wants to experience the Saudi League title to complete his trophy collection.
Yes, that's why he still looks amazing to this day, a player who often suffers from injuries definitely makes it difficult for him to return to his best performance. Whereas Ronaldo is always careful when playing so that bad things don't happen to him and he also always maintains his body condition and leads a healthy life so that His stamina is still quite good until now.