@FrankieMcGrath make yourself the most attractive thing.
One of the most valuable things you can do with your dog is when you first get him or her is get them to associate you would their highest value reward. So for mine, it's food. Since eight weeks old, they know that I am the provider of the food and the treats. From the day their littermates go home, I spend 15-20 minutes 3 times a day just training them. Which I know people think sounds ridiculous. But it means by the time they're 12 weeks old and before their first walks, they have all their basic commands completely mastered and they associate doing what I 'want' with nice rewards. I use high-value chicken or roast beef.
Then when I am walking my puppies (I have Golden's so similar in terms of training style), I always keep a piece of chicken or beef in my hand at any given time. Because I've already done training with them, they 'expect' me to have something. I use the food to encourage them to keep their eyes on me and when they do, they get chicken or beef. That'll be every 30 seconds or so on a walk. It also encourages them to walk to heel (and thus not pull) because the treat item in your hand is being held close to your body.
Also just be careful with which interactions you allow them to have. You want them to say hi to people and other dogs nicely, but not every dog and not every person. You'll get 'vibes' after a few walks of the sort of people who won't encourage jumping up.
If they jump up at people, you say 'off' and use the treat in your hand to lure them away from the people as you do it (it's called 'redirection' by trainers).. Eventually, after a few times, the dog start associating 'off' with the treat and automatically stop jumping up and turn to you.
But also don't be afraid to pull or direct your dog away from people who are installing bad behaviours. Remember: they don't have to live with that bad behaviour, you do. Experienced dog owners will be sympathetic and with people who say 'oh it doesn't matter' just be firm and explain that you don't want your dog learning bad habits as one day it might jump up and accidentally hurt someone.
@VanGoSunflowers Just saw your post as I was typing 😀