Shelter trip training + dog stroller

Let's start with the obvious. I choose the wrong breed for what I want in a dog. At least I can fulfill his needs when I'm sick. I do positive reinforcement.

I am getting tired of leaving my dog home alone because I want to walk 10-15 km. I have a French bulldog that pr breed can't walk more than 45 min witch for me, barely counts as a walk. It's just boreing to walk without him.

So I brought a dog stroller. I have tried putting him in a wheel barrel, and he just sat and enjoyed the trip. (I do a lot of random stuff to desensitize him) He loves his doggy backpack or being put underneath the jacket like a puppy and carried that way. But it is just not a good idea for his hips or my back. Also when he gets old, the buggy will be the solution so he still can get out and get his adventures 2-3 times a day.

I don't expect to be any problems in training him to be in the buggy. (I really expect just to throw treats in, close the door and go) But what do I do if this isn't the case? How do I train him if he starts to scratch/dig to get out? Should I maybe just walk him tired and then offer him to get into the stroller?

I also want to take him on shelter / stealth camping trips. How to i learn him it can be a thing to sleep on "the walk". I can't seem to make him settle. He wants to walk and don't get the hint we are staying at the spot.