I think it was not terrible, but it wasn't amazing. I would say you will be entertained most of the time.
Tom Hardy is definitely awesome, and the best parts might be the ones about his interaction with Venom.
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I think the rating did not help, because it clashes with the brutalness Venom's action suggest - biting off heads isn't pretty. I suspect that held some of the movie back.
The villain is basically evil Elon Musk clone with only a hint of depth that's not really utilized in the movie.
Eddie Brock is an investgiative journalist that basically loses his career and his fiancee for asking some challenging questions to the villain. And while we see him trying t pick up his career, he doesn't really show any agency of digging deeper into the thing he uncovered. He needs a doctor in the villain's team to convince him to do something. I would have expected an investigative journalist hero would be actively pursuing his lead and maybe recruit that Doctor to his cause.
But what happened there felt weak, and could basically have been cut in favor of seeing more of the interaction between Eddie and Venom.
As it is, that's basically the smaller part of the movie, and we don't really see how Eddie convinces Venom to fight for Earth and not eat everyone.
The final fight suffers the problem that many superhero movies have (but not everyone of them):
The two symbiont abilties are kinda abritrary - so them throwing each other around or whatever makes it difficult to say that anything meaningful happend to them or how the fight is progressing. And since the villain(s) are kinda one-dimensional, and particular the relationship between villain and hero, we also don't get any interesting interactions between hero and villain in the fight. Theoretically Venom probably could have had potential to make it interesting by doing more with relationship between Eddie and Venom in that fight and basically have the villain fight just as backdrop, but they did not.
To give a counter-example: Someone like Magneto and Professor X have a deeper relationship, and so when they clash, they have stuff to talk about, to be angry about, to be sad about, to be sorry, they can exchange arguments and what not, all while they are blasting each other with mutant powers.
If you don't have such a relationship at work, you can still make it interesting when the fight abilities ar ekinda relatable - someone getting his weapon knocked out his hand or suffering a deep cut is something you can understand. Someone being thrown around through a wall and falling of a 10 story building to continue fighting on the ground is much harder to relate to.)
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