Buy Starlink and resell it. You will have free high speed internet plus you will have an additional source of income.

btw. 5 Mbps is quite slow, after all, we are in the year 2024.
Well, I did not think about reselling it, but thanks for the idea. I was planning to do something. But let me share what is the problem. I do not do politics and the local politics here is too bad. We have one Internet provider in the village and he do politics and he has some political power. This is why another person cannot start their own internet because that guy is doing the business with his political power. It's not only in my village, the situation is same in most villages in Bangladesh where only one internet service provider internet and no matter how bad their services, you do not have another option. They are just Mac reseller. If I want to start a business, I have to join a political party and bribe them.