I was on the Internet in the wild west period when you could just as easily stumble upon the kind of stuff you can only find on the dark web just making a Yahoo search.
The moderation took way too long but I understand that it could be even worse but the internet is still a fucked up place maybe less than before but still bad
There are some useful websites out there if by darknet you mean the Tor network. BBC, Debian, Reddit, and Z-Library (an eBook download site that had its content availability reduced after legal pressure) for example have onion domains.
I highly doubt it, my mind was s very strong and I have seen many thing in my life, gruesome death, abuse you name it. Nothing disturbs me. In comparison, the average person is too sensitive
Thinking of it a bit differently, have you considered you might not be sensitive enough? There's some real benefits to living with a healthy dose of sensitivity; for one, it is part of a healthy response to situations that could be physically harmful to you. Best of luck out there :)