Real Madrid no longer have a super star striker after Cristiano Ronaldo and Benzema leaving their clubs recent seasons. Mbappe is not a striker but he was used at that position several times in PSG and France teams, that could help you to adapt to striker position and role and he will do it better in Real Madrid.
These current players might not be like Cristiano Ronaldo no doubts but they don't suck at scoring goals if they have the right creativity. Just to let you know, Cristiano Ronaldo was never a center forward, he was a midfielder and then more of a direct winger for Manchester United even for Madrid. Kylian Mbappe is the same but he should move more to the center forward position more so he can score goals. I feel like he'll do better when he is not being the point man. Did y'all watch the world cup finals against Argentina? Immediately he was removed as the point man, he was able to score all the goals he scored. Playing him as the CF doesn't work IMO!