I’m in Hollywood我就是好莱坞

an eighteen-year-old blond-haired westerner

Mmm. No, I can't recommend this novel. It has about one-and-half things going for it, and several against.

The acceptable:
-It's decent for a relaxed read. If you read it when you're really tired, and your brain and conscience are barely functioning, it'll be pleasant.

-Hollywood and MC are somewhat intentionally portrayed as immoral, rather than totally resulting from wish-fulfillment.

The bad:

It's an unrealistic world with a despicable MC. Real people who would have provided competition for the MC have either been written out of existence or dumbed down for the MC to awe and take advantage of. Even if we ignore much of what's wrong with the MC, it's another matter to ignore all that's wrong with the world he's in, because it's supposed to be the real world in every other way. The story reads like a game on easy mode, but it won't admit it, and pretends to be set in a realistic world.

Upcoming rant, which I don't recommend reading unless you're bored:

1. In order to have a fast pace, and to make the MC able to accomplish everything in his prime, things get done impossibly quickly. I find it easier to accept the existence of multiple worlds, magic, and dragons that shoot laser beams out of their butts, than that a theatrical release's entire pre-production, production, post-production, including advertising and distribution, only take a few weeks, even for a fairly small-scale film. The MC tells a major film distributor to get ready to market and release his prospective film in one or two months, and the distributor has no problem bending over for him. At one point, the MC singlehandedly edits all of a movie's raw footage into the final product in less than half a day.

Just, no, that's literally impossible, the author apparently has no idea of what filmmaking and editing entail despite trying to write a story depending on them.

Similarly, the high-level corporate meetings and negotiations in the novel take anywhere from seconds to minutes, instead of numerous interactions over days and weeks and months, and CEOs decide on multi-million-dollar agreements in a matter of sentences. This is pushed along by the second point, namely:

2. Every character is s*upid. The aforementioned CEOs and other professionals are short-tempered and/or criminally incapable if they're obstructing the MC. In a normal novel, this would be annoying. Here, it's downright insulting, because the novel's dumbing down real people. However, this mass idiocy is necessary to elevate the MC from an ordinary guy into:

3. The unconvincing supergenius MC. It's one thing for the MC to somehow perfectly recall every book he'd read and movie he'd seen. And sure, he's middle-aged or something, so he'll act like an experienced adult when he reverts to a young man. But those attributes should not greatly improve his ability to act and direct, to say nothing of anything else. Before going back in time, the MC had been a fourth-rate actor and director, but now, he's somehow become first-rate because he'd seen the finished products (with different actors and actresses from ones he's casting). The author argues that, since the MC had seen the original movie, he's able to mimic the original actor (which makes his acting perfect) and perfectly direct everyone else.
Let the ridiculousness of that argument sink in.

If it doesn't, well, the story's right up your alley.

As with all of his skills, the MC's super directing ability spontaneously develops because the author decides that the MC has to have it. In fact, to prove how awesome and charismatic the MC is as a director, he has the MC lose his temper and scream generic rebukes on set, which somehow causes everyone realize how brilliant and commanding the MC is, and makes all the actors respect him. What...

Of course, because the average world IQ has been lowered by a couple dozen points, everyone's impressed by everything about the MC, from his unusual maturity to his genius, but he's actually a perverted scumbag with no respect for other people.

4. He's actually a perverted scumbag with no respect for other people. Yes, I had to reiterate it. MAYBE we can treat what the MC wants to do to the future A-list actresses as purposefully done by the author to show Hollywood's corruption. It's harder to ignore the author's obsession with a child. Like, dude, have him be a celebrity serial killer if you want, but don't keep pushing a thirteen-year-old drug addict into the plot as a love interest.
When he's not busy taking advantage of women and children, the MC plagiarizes novels and storylines from the real creators. For some reason the author assumes that, since a movie would have been released a couple years later, the idea behind it hasn't been formed yet. Uh, no.

However, since no one sues the MC and reveals that they'd already written a similar storyline or draft years before, I can only assume that they, along with their families, friends, business associates, and everyone else they'd shared the idea with, stopped existing when the MC appeared.

For its vacant entertainment, the novel's probably worth more than two stars. But with the MC being not simply unheroic but disgustingly immoral, and the world around him being s*upidly simplified to make everything a matter of course for the MC, the story's unpalatable.