It's not complicated at all. No need for an agent. Enter Thailand with a Non immigrant O Visa, open bank account upon arrival and fulfill the financial requirements.
Thailand enjoys the 2nd fastest internet speed worldwide (#1 = Singapore). Depending on your location you can book fiber 1 Gbit/300Mb as low as THB 599 + VAT. It takes less than 2 days to get connected at zero cost, wifi 6 router included. Contract is for 1 year. Paradise for excessive internet users/streamers
no, even with a high speed connection like 1000MBps you end up at 200MBps when using the best VPN providers such as "Nord VPN". 4k streaming without buffering brakes is not available for free.