I watched a YT news program from Africa with (I think) hosts from Niger. They explained that the coup was bc France still controlled their financial system, aka colonialism 3.0. While 1\3 light bulbs in France are powered by Niger's uranium, most of their homes lack electricity. This colonialism is the context where Wagner operates.
Also a host mentioned that Wagner's activities are against mid-east insurgents created by US wars who went to Africa.