Hello there. I do understand that people don't appreciate it when this topic is brought up, but I'm desperate. The reservation for the GPU I want to buy ends in 3 days, but I will receive my salary only after a weak. Please recommend where I can get a loan

Well, you still asked the question. And the only thing left for us is to recommend you something so you won't get ripped off by a shady slumlord. And there's plenty of those, trust me. Misread something- boom you're in huge debt, misunderstood something- the same, something happens to you, and you missed the payment by one day- you're better off living the country.
But I can recommend a good and trustworthy one. Just view this websie.