There’s 54 countries in Africa, and each would have its own distinct post-colonial story. To my shame I know very few of them- just a smattering of knowledge about the Mau Mau rebellion in Kenya and that’s just about it. Although some aspects of this film are for dramatic interest (e.g. the British public servants here are not historical figures), the rest is pretty accurate. I thought for a minute that I might have to rethink my opinion of Winston Churchill- but I didn’t. A United Kingdom is a good movie (and here’s a link to the obituary for Ruth Khama)
My rating: 4.5 out of 5
The Resident Judge of Port Phillip 
I was hoping to see this, but I have a feeling we’ll miss it. Like you, I don’t know as much as I should about African history, though I did learn quite a bit about South Africa in school history classes. The Boer War, Cecil Rhodes etc. Since then, my knowledge is scattered as you say.