I am afraid you will need time before you can generate $200 per month and it could not happen in a short time. But if you have skills in trading, then the first place would be cryptocurrency trading. If you have skills in building a website, then that will be second place. Joining an affiliate or publisher will be a good idea, but that will only work if you have huge traffic for our website. If you have money, you can build a gambling website so you can start to earn money. I don't know the rest option because to generate $200 per month, it needs effort and needs time to start that amount.