Part of going to a breeder is they are able to show you the family tree and advise on what dogs have been bred in or bred out and why.
I talk to mine once a year because they call up to check in on the doggos. They also have group chats for each litter.
That's kind of like dog breeding 101; keeping an eye on the litters so they can identify good and bad traits, shaping future litters around that. So, I'm able to tell them what traits, personality, and fitness I'm needing in my next dog, and they are able to tell me when they're next planning a litter from dogs like that, or refer me to another good breeder.
If you're not needing to do any of this and are just after a pet doggo, then there's really not much point of going to a breeder. And if a breeder isn't like this, they're likely just in it for quick money and you and the dogs suffer. Unfortunately there's quite a lot of "puppy farm" fuckheads out there.