What Type Of Dog Walking Tool Is The Best To Train My Dog To Stop Pulling On The Leash During Walks? Thank You?

I am in the process of trying to get my dog to stop pulling on the leash during walks. Right now, I am using a regular flat collar. I don’t feel that a flat collar is going to help any. I believe that there must be a better dog walking tool. I will not use a greyhound collar, a prong collar, or a choker collar. Thank You!