I solved this problem on my map by making the Congo an impassable jungle zone; the coastal strip is given to Angola.
There are so many problems with the roundels used (USSR is a fantasy, Italy is the Allied design, Canada maple leaf appeared post war, DEI should be orange triangle etc. etc. etc.) that griping about Congo is spitting in the face of a hurricane.
I also think there should be more islands in the north Atlantic, south Atlantic and Indian Oceans as landing strips for aircraft, particularly if you’re going to include the likes of Malta and Cyprus so close to land.