Coke, Xanax, methylphenidate and some beers

I snorted a few grams of coke today, around 7 or so, earlier—about 4 hours ago. The huge amount and frequency of use is due to the terrible quality and low purity of cocaine in my country. Lab tests have already shown that in some areas there’s at most 5% cocaine, and in big cities, even 0%. What’s sold on the street is cheap because it’s basically a mix of lidocaine, xylocaine, caffeine, baking soda, and other garbage added to increase volume.

Long story short, it’s hard to find good, high-purity cocaine here unless you’re rich, live near the borders of cocaine-producing countries, and have the right connections.

But here’s my question… I used that crappy cocaine before work and then took 6mg of Xanax to come down (I have a very high tolerance due to long-term abuse of all kinds of benzodiazepines). Two hours later, I was “sober” and feeling okay, but a coworker offered me some lines of methylphenidate (Ritalin), and I accepted.

I've already done some stupid and dangerous mixes of methylphenidate with cocaine and caffeine in capsules. Also cocaine with pure amphetamines, known as "Rebite"(femproporex) in my country, which is used by truck drivers to stay awake for days on the road. Considering my short height and low body weight, it's honestly a miracle that nothing serious has ever happened to me.

Since I had taken Xanax, was that dangerous? Or just a big waste? I also have a high tolerance to methylphenidate and didn’t feel anything. Is it a waste to take benzos before stimulants? Do they cancel out the effects?

I was thinking of having a few beers with this coworker after the shift, but I’m not sure if that’s a good idea, haha. Thanks for reading the ramblings of a lost and reckless person.