easier said than done. Bangladesh is the 8th most populated country in the whole world. in a place like this the competition is so high and the opportunity is so low that you should be happy that you are making a minimum wage. but not all people are only making the minimum wage, there are people whose daily expenses is more than minimum wage earned by people.
there are some side hustles that you can do in order to increase your wages but finding a proper job and keep doing the side hustles is quite a bit hard in here. and from what I know in my country the minimum wage-earning people are most likely illiterate or doing works that doesn't include any technological knowledge. so I don't think they will come forward and invest in Bitcoin. and those who are investing in Bitcoin are those who really know about it. so tackling the minimum wage is not a big deal here.