The market is volatile, and the only way to make $100 per day from a $4000 investment is to identify a trading method or investing plan that works exceptionally well for you. I would advise a trader to understand the level of risk involved in the market as well as the basic requirements to follow up. The market is risky, but with a well-planned strategy in place, profits can be earned with simplicity. It doesn't take much to make or lose money in the market; it all depends on the market and one's strategy.
In spite of the fact that it seems easy to say, it is not easy to do. I have seen a lot of traders who have good knowledge and perfect plans but still lose every time they trade. If making money from trading became so easy, not many people would lose from trade. Only with a capital of 4k$, and OP wants to earn 100$ per day, i.e., 3k per month. It's crazy profit, and I think even seasoned traders can't do it, let alone newbies like OP or us.
If you commit to this profit, I am willing to cooperate to support your trading capital, and every month, I only receive 500$, 2k5$ I will give you.