Just looking for advice from anybody who has been in a similar boat or knows a lot more about this than I do! Also apologies for any terms etc i get wrong i am very new to this type of behaviour so my limited information is coming from google!
I have owned a dog previously but had absolutely no issues like this before. I have a 5 month old puppy who from day 1 is clearly very anxious about nearly everything, she doesn't like going out for walks and hides when you get the harness out, she is petrified of the car and is regularly car sick, she is scared of loud noises etc.
I did my very best to socialise her, particularly with people, i had friends over regularly and carried her on short walks in my village to my DC's school so she heard traffic, saw plenty of people etc. Unfortunately i don't have any other friends with dogs who like other dogs but we encounter many on walks and we attended some puppy meet ups to socialise her. At first she was just scared of all other dogs and tried to hide away or get away if on lead, so i haven't forced interactions and if she ever did show interest in saying hello to a dog on a walk I'd let her have a quick sniff to say hello and move on. We then attended puppy socialisation classes when she was just about 4 months old, she walked in and started barking at all the dogs and since then she now barks/reacts to all dogs when out on a walk.
I have spoken to the trainer from our socialisation classes and from what i've gotten from google and attempted the disengage approach with treats and we do manage to have some successful walks where she doesn't bark, but also some unsuccessful ones.
And here is the main issue, 80% of the time if i or my partner walk her alone she will disengage from other dogs with treats when she looks at us and doesn't bark, if we go on a family walk with our young DC she loses her mind and goes nuts if a dog is near or far, we cannot get her attention back to us and on the odd occasion my DC has stroked the other dog that's approaching she has actually nipped me or my partner (whoever is holding the lead) and I don't know if that is jealousy, being over-excited, aggression?! Is she now a reactive dog?
For background she came from a lovely breeder and i saw all the puppies several times, I have kept in contact with all other puppies owners and they are all outgoing social dogs who rarely bark, one of them lives nearby and we spend time together, my dog is perfectly happy to socialise with them.
I just don't know what i have done wrong? I know its such a non issue in the grand scale of things but we would obviously like to do alot as a family with the dog like dog friendly outings, UK holidays etc but it is impossible, we have tried twice to take her to a dog friendly family event and it is a disaster with constant barking at dogs but also people which was a new thing as she'd never barked at people before.
Any advice please?