I think that one thing which is important to understand in order not to be disappointed is that this anime isn't really about football. What I mean by that is that if you are here to see depictions of football matches in anime, whether it is realistic or not, you won't find it here. It's probably the main reason why some of the top reviews didn't like the anime, but it should have been obvious from the premise.
The anime is about strikers. Obviously, the position of striker will be considered more important than other positions in the anime, even if you think football in real life is different. I would even say the reasoning explained in the anime is pretty convincing: Japanese people tend to prioritize the team before themselves and don't deal well with unexpected situations because everything is well organized. I have no idea if this is true for the actual Japanese team and I don't know much about football, but the situation in the anime is clear: Japan is missing a striker and this Blue Lock Project is here to create one.
Another interesting part in this anime is that it doesn't follow the usual setting where the main characters are a school club trying to win the national tournament.
Now the negatives, because the anime isn't perfect. The characters are rather shallow, and you'll only learn more about a handful so if you're here for character development it's probably not for you. The anime also often focuses on a single character so the field view is often narrow even during the plays. There are also a lot of monologues during the actions which can be annoying. The animation is pretty good, although the few bird's-eye views that are used are pretty bad.
Overall I really recommend the anime whether you're a football fan or not, 9/10.
