Riding on the hype for the real life soccer Word cup 2022 in Qatar, the anime was released at the perfect time to be overhyped (even using names of the irl players participating), grabbing more viewers than just the fans of sports anime.
Story:
Having that more audience worked as its advantage since as a sport anime its terrible in comparison, failing in every aspect that makes a sports anime a good sports anime, throwing out of the window everything related to tactics, analyzing opponents, teamwork, will, self-improvement as a player and as team, specific practice to improve specific skills, rivals (between teams or in-teams), action, characters interactions/development/synergies, ect...
Very quickly turns into a SquidGames-kind of game instead, where the show pretends to make the Main Character seem like the underdog (being told it is considered the 2nd worst player participating) which is bull because his skills are at the same level as the other players. It even contradicts itself because the main motivation for the MC is him being angry about being so much better than everyone else and his team being trash, speaking of which:
The Main Character:
Everything about him is bad, he is not the underdog as the show makes tells you to be (contradicting what they're showing, a underdog would surprass their obstacles with superior tactics, harder training, stronger will or barely scrapping by, which is not the case since he brute forces through everything, gets the undeserved plot-armor luck and gets carried by another guy as plot-convinience), and he's not likeable either, he has the typical bland black haired protagonist design meant to be a self-insert, his motivations are shallow at best (wanting to become the best striker) and despicable at worst (trashing on everyone else and his teammates), having this edgelord mentality of 'I don't need any friends or a team, I'm a lone wolf', very depicted on the art style, making the edgy faces for MC multiple times, burning that image in your mind. His main objective is not being a better player, but a selfish one, making the viewer not wanting to root for him.
It is fine to have characters like this though, when a character starts with negative personality traits, it means they have room to grow up and become better, that's called 'character development', in another show it would: forcing that character out from their original and desired position, make them sit in the bank instead of being in the field, make them lose the match because of their errors; but not in this anime, it wants to be so edgy that not only the MC was never called out of his bad personality, but it is rewarded for it, since it's said the Blue Lock's objective is to create the 'most selfish striker who doesn't rely on his team, the biggest piece of shit person'.
Conclusion:
Heavily carried by animation and well timed date of airing. It wants to tell a story of a edgelord self-insert MC with backwards character development, poor to non-existent storytelling, zero likeable characters (all of them being egoists, which is the point of the Blue Lock itself), and a poor excuse of a sports anime. The message trying to convey is that 'be a piece of shit and rely on no one to succeed in a team sport' disregarding every position in soccer that isn't called "striker".