Television

Hi i have an old lg tv. I never watch tv i only play my switch on it. I really wanna watch tv, netflix and youtube. What is a cheap device that i can buy to get those things on my old tv? I dont have any knowledge about this. I do not care about alot of channels, Netflix, prime and youtube are my main focus. Im dutch btw, idk if that matters. If one you could help me that would be awesome :)

Thanks!