Hello. Thanks for mapping.
You (re)tag track to highway=residential. It is indeed no track. But, the tag residential is to be use within urban areas. Here are clusters of residential areas which are connected by a road. Typical unclassified, or, when it connects multiple settlements/villages, you can consider tagging them as a tertiary highway. 
Most roads are unpaved. Add that tag too.
On this wiki is more info about tagging highways.
https://wiki.openstreetmap.org/wiki/East_Africa_Tagging_Guidelines
Do not over extract. Especially in roads / rivers networks, there may be many paths / streams in the imagery. You are not requested to map them all, and most of the time you can trace only the main ones as explained in the instruction.
Main roads are to be tagged as highway=unclassified in general

 As a general rule, keep in mind to map at 17-18-19 zoom scale levels for topographic data; 
Best regards and keep mapping