There were a number of African states inspired by socialism in their post-colonial governments, or in some cases officially stated their ideology as Marxist and/or based on the Soviet example. So for example Ghana under Kwame Nkrumah is an early example, while later in the piece you have Ethiopia under the Derg/Mengistu.

The Soviets did indeed provide various levels of aid to these states, along with other states there were less so ideological allies and more allies of convenience, like Egypt under Sadat. The Soviets also contributed to proxy wars in Africa, notably in Angola and between Ethiopia and Somalia (although the bulk of troops sent/transported were Cubans).

Countries like Rhodesia and South Africa during the apartheid era actually pointed to the growing 'red menace' in Africa as a reason for their internationally contentious positions.

Your question is stated terribly.
Soviets did very much get involved in Africa,from Ethiopia to Angola, supplying everything from engineering to military advisors and arms