If you find yourself researching residential proxies and captcha solvers, stop. You have crossed the line from automation into attack. The bot farm is a weapon, and like all weapons, it eventually turns on its creator.
If your smart lightbulb, baby monitor, or old router has default passwords, a worm like Mirai has likely recruited it. Your device is now a proxy in someone else's farm. how to make a bot farm
The operator rents a cloud server (often using stolen credit cards or cryptocurrency). They then purchase a list of proxies. The cheapest are "datacenter proxies" (easily detected), while the best are "residential proxies" harvested from infected IoT devices like routers and smart fridges. If you find yourself researching residential proxies and