A classic example of the perils of anti-colonialism is the Congo. Once a relatively prosperous colony of Belgium (of all countries ...) due to its rubber and copper resources, in the 60s, it began to assert its independence. Inevitably, it descended into anarchy, the mines fell into disrepair as European maintenance technicians fled, and the once-thriving economy collapsed. It has survived despite numerous coups, rebellions, and ongoing disruptions only because lender nations continue to prop up its economy and send troops to defuse the internecine violence.
Savagery is so much preferable to colonialism.
I think British colonialism was beneficent, and French colonialism somewhat less so, but you are choosing a poor example with the Congo and Belgian colonialism. Granted it is a cesspool today, but the record of King Leopold’s administration was murderous exploitation at its worst. It was basically a license to private companies to enslave Africans at the point of a gun for mining and rubber extraction. There was no effort to bring civilization except for fortress white enclaves.
I had a buddy who was flying out of Kinshasa once. He was sitting next to the entrance door. A black American Peace Corps volunteer boarded, leaving Zaire after his two year assignment.
As he boarded, he turned in the doorway, shook his fist at Zaire and said, “I am so glad that someone sold my great, great, great, grand-daddy into slavery!”, turned and took his seat and ride back to civilization.