You need to learn how to properly use a choke chain for training - the heel position. The key is correction and release rather than getting into a tugging match. A chest harness fosters pulling as well.
One training tip is what I call "change direction". Handlers use it when they pick up a new dog to show and have to get it ready to go in the ring with little notice. You have the dog on your left - with a properly applied chain collar. walk forward and if the dog and then with little warning make a turn and change direction - and again and again. never give your dog more lead and never take in less - when you change direction - they get pulled and soon learn that staying with you is the path of least resistance.
Next a basic command like sit - and when there is something on your walk that they see and is distracting or interesting - put in a sit and when they attend to you again - continue forward.
You do really need a training class to make sure you get the hang of the chain collar.
FYI - to reference your comments on another thread - I've bred, raised and showed basenjis since 1984 - and this is the kind of information that people that I've placed a puppy with can count on getting from me - forever. This is what sets the reputable breeder apart.