Review Detail of Hadi_Djouini in Reborn as an Extra

Honestly it's very ...meh , I would have liked it much more if the characters didn't behave like a bunch of mentally challenged 9 year-olds, while I was reading I noticed that I didn't give a single fuck about any of the characters, their fates, their background, their emotions, ambitions feelings... I simply did not care, why is the villain so one-dimensional? Why is Rio so edgy? Why is Lia so abnoxious? Why is fade so pathetic and unlikable? Why is it that whenever one of those S/SS rank heroes show up and does something it feels so underwhelming and somewhat forced? The first few chapters should always play a big role in establishing an interesting premise , perhaps give us a good impression of the Mc as the mysterious cool guy that we would like to know more about and even some authors like to dive deep into human psychology to explain the mc's behavior. unfortunately, the beginning of this novel did a terrible job at that, we barely get to know about his previous life and why did he become this 'selfish'. And I'm asking myself at this point, what's the point of transmigration? It feels like it's put there for the sake of having it in the novel tags