Earning money without investing is actually quite hard. I suggest you to go find a job and work hard. If you have skills like coding, you can go to some freelancer job site and offer your skill. It takes time to make 1 bitcoin per month at your current state. So as i said, the most easiest way is to just work/ find a job and convert to bitcoin. And if your converting to bitcoin with money, you are technically also investing as bitcoin prices will go up and down. Good luck earning your bitcoins, work hard and never give up!