Chainsaw Man

[KrayZ33]

"Why did he not ask anyone for help? Why did nobody report to the police?" is what I'd like to ask, but then you, and maybe others too, will attack me again a la "how dare you ask, you dumb shit!". Considering how we saw a totally grounded, realistic city this episode with normal ass police officers, it just makes me question Denji's past even more. He must have been straight up snatched from mafia before he had a chance to seek help ... except we saw how the mafia left him be, just telling him "you go get that money, dun care how".

It's weird and not my fault if the anime thinks it can save an explaining flashback for later.

Well... it's not like "the anime thinks" it can save it for later, because it absolutely can.
The question is why you need it to be explained right now to the point were you feel "frustrated" by it if you aren't getting your answer spoon fed.
It would add absolutely nothing to the show as of right now and whatever reason given later, if there even is one, could potentially enrich the way the story is or was told in hindsight.

I have no idea why it's so difficult for you to relate to his situation.
As if it's the first time some kid is being extorted even though "hE cOuLd hAvE gOnE tO tHe PoLiCE".

"why didn't the kid tell someone that she got raped by this dude, silly kid" - said no one ever in real life either. Or rather, only absolute idiots that have no idea about anything would say something like that.
So why should it be any different in fiction.