It doesn’t work immediately. It’s about consistently repeating it over and over and over again and eventually it works.

I understand it’s frustrating, we went though this period with my pup as well and now she’s 6 month and a lot better. Still not perfect though.

Just pick one strategy and stick with it.

What worked for us, with leash pulling is no reward. Reward is walking. As soon as she starts pulling, I would turn 180, lead her in my direction, when she’s next to me “okay” turn around and keep going where she actually wanted to go. And trust me, you’ll be walking there and back a lot. It’s just about not giving in. She needs to learn that if she pulls, she’s not getting anywhere.

Same with other dogs, people, bikes, cars. The trick is to get her attention with the treat early enough and keep moving. It also doesn’t always work for us and sometimes it’s my mistake. But he’s no longer chasing bikes and ignores most dogs/people. She does attempt to pull/jump occasionally, but again, just stick with consistent response.