OP you say you can't cope with the dogs but that they are part of your family and you can't rehome them so what are you going to do?
The dogs are clearly bored and probably unhappy as you're not meeting their needs and you sound at the end of your tether.
You need to look at your situation with clear eyes.
From the dog side: they need to get a great deal more exercise for both their mental and physical health, there's no question of that and unless you can afford to provide this in the form of doggy day care - I'm not convinced that a dog walker walking them for one hour a day is enough, although it would be better than the current situation - you seriously need to consider rehoming them.
From your side: what exactly do you get from having these two unhappy, bored dogs in your home? They probably want to show you a lot of attention when you're home if they're on their own all day, but that's not the same as you enjoying their company whilst walking, training and playing with them.
They're high energy intelligent dogs they should be running around letting off steam, using their brains, enjoying life. Not lying around staring at the four walls of their home for most of the day.
Imagine what you'd feel like if that's all you had to look forward to every day?
Unless you can give these animals what they need and want the kindest thing you can do for them is to rehome them.
At the moment you're reasons for keeping them seem to be because 'you can't give them up' and that's clearly for your own needs. That's a pretty selfish way of looking at it.
The dogs need more than you are able to give them so be kind and unselfish and either make changes so that they have their needs met or let them go to another home.