RE: Just Watched AOT and well? A Review.

Adaptations will never be like manga, as they tend to omit things that are important in the end. For that reason the ideal is always to read the manga and then enjoy the adaptation.

However, you can focus only on the anime if you don't want to read the manga, I think that if you pay enough attention to it, you can also understand the story because at the end of the day it was a good job they did.