What if, I get a chance to participate in a lottery without any investment?
If any gambling site offers, free of cost entry in the lottery, i would definitely not miss that one.

I also love the lottery. Even though the prize is very small, I will still participate. Paid lotteries are certainly gambling. I have participated in paid lotteries or free lotteries. But I never expected to win it. As you said playing the lottery is very, very easy and there are many people who do it. So the chance of winning will be very small. And it's important to know that lottery is also a form of gambling, so you still need to be a wise gambler so you don't get addicted.