I am sure we have all tried some behavioral changing methods but here are a few that you could try (sorry if I you already know this!)
Harnesses are great for walking reactive dogs. One with a D ring at the chest is great (if you do tense up it is less of an issue for the dog if they are wearing a harness to the lead on the collar)
Some dogs and owners may also feel happier using a head collar with the harness. I do on one of my dogs. I walk him from the harness but know if I need to I can gently turn his head to avoid very tricky situations.
Do not walk on a head collar alone as this can cause different stress to a reactive dog and cause neck injuries.
"Look Dog" is a great thing to try - you may need a huge space to do this, you may even need to start with a toy dog but it is a great skill to have. In a distance that your dog can look at dog without reacting click and treat. Keep doing this and you will find your dog at a distance will turn to you when they see a dog. By making them look at the dog it puts your dog in control. Many people do look at me eg the owner but this actually increases stress. Imagine if you are scared and people say don't look whatever you do don't look - the thing your are frightened of becomes much scarier in you head. Do practice this as look dog can get you out of many tricky situations if the default setting for your dog is to turn to you when they see a dog.
"Lets go" is another great asset. Practice in a calm place. Have your dog on a lead and the idea is you turn away quickly and the dog will follow you. The best way though is to slide you hand down the lead as you say lets go. You will find it makes the dog turn quicker and smoother and the dog will be close to your side. So remember you must slide your hands down the lead to the dogs head as you turn and say lets go - this is brilliant for getting out of tricky situations and your dogs will love it - a bit like a controlled chase.
I muzzle train all my dogs, not only the reactive ones, for many reasons. It builds up a lot of trust in a dog and owner if they are happy to wear a muzzle and the dogs love the training. I use a plastic large jug to start with. Click and treat the dog looking at the jug which I am holding. Gradually ask for the dog to push their head into the jug. Once they will happily put their head into a jug you can try any object, by the time you do this will a muzzle it will be easy.
I also crate train all my dogs but especially the reactive ones - they need to be able to chill out totally, it can be hard for them to understand and feel relaxed. If they are crate trained you can teach total relaxation. Also if you take the crate with you the dogs will be relaxed in strange situations. For me a great moment was when reactive boy was asleep in his crate with dogs barking around him.
Don't ever worry about just using coping or distraction strategies. If a dog is too close across the road and your dog will react drop treats on the floor to side track your dog and also change your dogs body language to the other dogs.
Always always reward calm behaviour, even if it is in the home or not in a trigger situation. Give it a name we have "good chill" Over time you can ask your dog to chill and he will find it easier to do this if he used to doing it.
Boundary games are also good for reactive dogs - this teaches them that sometimes it is ok to wait, chill and not instantly react. So maybe use a flirt pole or make them wait before your play tug, or release them from their bed etc
Sorry I have gone on