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This is my computer setup.
(cdn.masto.host)
Linux as my daily driver via Steam Deck docked to my 65" tv at 1440p 120hz. The Steam Deck isnt only a handheld gaming console. It's a full Linux machine.
Not sure if you're serious just forgot a /s but in case the former I just would like to point out that many people—me being one of them—would absolutely love a second monitor but can't afford it. Hell, I can't afford a first monitor. The only reason I have one is because I bought it back when I had a job that actually paid me a living wage. If it broke down now, I would have issues.
Start making rounds at companies near you. I haven't paid for a laptop, desktop, server, monitors or ssds in nearly a decade. I pop in, ask if they have any hardware that they need to get rid of. Most companies have to pay to get rid of techology, most of the time their IT department is happy to offload tech for free. You just have to be fine accepting things 5+ years old.
After enough time and making friends with the c-suite, I have a couple companies that just ring me when they have stuff they want to clear out to give me a chance to grab stuff before they recycle. It reduces their cost to recycle, so they are more than happy.
Monitors are cheap as hell right now. For the price of 9 Five Guys burgers you can get a pretty good one at Walmart.