Hi Hopefull, 
I want to bring another point of view, you keep saying that your own problem, and the problem of today is only porn, we have it everywhere and cant avoid it. 
I dont think thats right, of course its much easier nowadays to be exposed to P* because its everywhere, but usually the root cause is not that you saw P* and you get hooked. 
​I remember to first time i was exposed to P* i didnt like it at all! i was nauseous and dizzy for days, i would never have looked again. 
However, i was addicted to sex at a very young age, and i needed to high, so eventually i got back to P* where i slowly worked up tolerance level.... Nebech for me..... so the problem wasnt P* it was my own emotional issues that caused me to look for it, and it is the same for lots of other people. 
Some people on the other hand get hooked when they see P* and get addicted very fast to it. But the addiction is the issue not the proliferation of internet. because even today, it is complexly possible to be fully sheltered from unfiltered internet. I know many many families that only own non smart phones or even some that do own smart hpone and computers and tablets, but all of the devices are strictly filtered with whitelist and other stringencies, so they almost never have access to unfiltered internet.  
So if having access to unfiltered internet is your ONLY problem, then its pretty simple (not easy, but simple) to fix it. Just install a strong filter on EVERYTHING you own and thats it. You will feel so free, you have no idea how liberating it is. 

Just to add to that. Hopeful, you mention that an unfiltered smartphone is a challenge for you. It's a challenge for me too.

However, even on a work phone it's possible to filter and without even installing any apps. I think the simplest is through the organization TAG (tag.org). I have an iphone and using the iphone screentime capabilities they could calibrate my internet access using the iphone built-in features and saving the screentime password on their machines. It's completely free.

I've tried different approaches but ultimately just cut out any internet access from the phone and blocked the app store (I keep work apps like Outlook and Teams). Not sure if that would work for you but definitely limiting the access to porn should be within their reach.

Hatzlacha!

As someone who is very well versed in technology, I have never found a filter that was not easily worked around; even if I found a filter that worked, I work in IT for my company and have multiple smartphones on my desk every day for other employees and could (and have) grabbed one for the wrong reasons. I have not tried TAG, but I will look into it.

Thank you for the reply 

I am sorry, I didn't mean that Porn is the ONLY problem; sex addiction is real and a huge problem for many people. I just feel that the accessibility of Porn is one of the major reasons for the problems we have today. For me, if I didn't have porn available to me whenever I had an impure thought. I would be much better off.

I hear you.
this is the reason why I never wanted to go into IT, even though I have a feel for it, I know that filtering would be very hard for me, and I’m not willing to give that up.
good luck