Vigilance is the most likely way to avoid accidents or fights between dogs. This protects you and others and prevents you from having to say, "I didn't mean for that to happen". If you don't want something to happen, you must actively prevent it from happening. Feel free to use every day to play out a "what if scenario" along the way. For one simple reason: if you imagine an unpleasant scenario from time to time, you will also deal with the possible solution.
Use opportunities - train
Every walk should be more than just a walk. A small highlight, such as jumping on a stone followed by a reward, a short race, a hidden treat that the dog is allowed to look for, letting the dog wait and calling him plus a reward are only a few examples that take a few minutes but strengthen the bond between dog and human and train the attention of both for each other.