How do you get prescription drugs?

[UnsureOne]

So basically where I live (Poland) there's a huge stigma on benzos, let alone opioids like fentanyl, forget about oxycodone or hydrocodone. I'm also interested in barbiturans, the more potentially lethal and dangerous the better I guess.
It's one of the things I'd like to do before I ctb. Mix up some of these pills, enjoy the high or sublime effect of washed out consciousness, drinking rum and watching my favourite show. Maybe pepperoni pizza on top of that would be nice. If I accidentally overdose, well, problem solved.
But I can't get these meds ANYWHERE. So here I am, asking - if anyone happen to live in Poland too and have a good source they'd like to share? Or should I rely on infamous dark web?

Please be kind in your responses. Please don't hate or criticise. I feel enough self hatred as it is.
Sorry if this post is messy, I'm drunk and drowsy on some perfectly safe downers my shrink prescribed me like hydroxyzine, tradozone, propranolol and valium (getting the latter was a miracle)

 

[iLikeFrogs]

Seems like there's no easy way. Only time I managed to get benzos here was when I was inpatient and it was only for a week or two since they're addictive. It's freaking tough and it's seemingly easier to get it from a delear than prescription (though I hadn't manage yet)