Unfortunately, in Nigeria there is no job as a mid person that you are going to do that is going to brings you money to even do dollar cost average. The minimum wage now is ₦70k and many companies and the state government aren't paying that amount of money to people. You have to be doing well enough and not earn in Naira to be able to afford Bitcoin with dollar cost average. How much is even ₦70k in dollars, that's like $60 or less, you might end up using all your savings to be able to afford $50 worth of Bitcoin. We still have a long way to go in this country and it's sad.
Your comment is trying to highlight how complex the current reality is. In fact, from the outside it may seem like (you just have to work), but the reality inside is completely different. If we generally think that the minimum wage is below $60, then think about (me/you) having to support (your/my) family with that money, then will you have any money to invest in bitcoin? In such a situation, investing in bitcoin becomes a dream for us.
The saddest thing is that despite so many potential people, they are systematically not given that opportunity. Some lift cans, some do freelancing, and some survive by running small businesses, while the mainstream opportunities of the economy remain beyond their reach. There is no one to control it. It is also true that this is not enough, earning a minimum livable income from that work is also essential. With the value of the naira decreasing every day, investing or saving based on the dollar exchange rate has become a luxury for many.