I would imagine that those starving bricklayers in Africa know the value of what they have, are grateful to have it, and would gladly share it with anybody they felt needed it more than them. Their life is probably difficult at times — whose isn’t? — but they have family, friends, and community who look out for them, because in the end they know they have nothing without each other.
While there often is more connection, and this probably does help, mental health data coming out of much of Africa (although generalizing the whole content together also isn't great) is still very unreliable as a result of corruption, lack of education, and religious fanaticism. For example, suicides are often hidden, or said to be the result of the supernatural, sometimes genuinely, sometimes because the family doesn't want to lose face.
BS. They literally risk their own and their children’s life to emigrate to somewhere where they have a fighting chance not to starve. Like crossing the Atlantic Ocean in dinghies
I have no doubt that there are those who wish to (and do) emigrate to other countries for more opportunities. I also have no doubt that there are those who stay and are happy living the lives they have, despite being impoverished. They are not mutually exclusive.