Hi, and welcome.
It’s a nice story, for sure, but i’m not sure you’re going to get a huge response, simply because few people become comics artists to draw old people and run-down houses. One of your genre pieces might be better bait for finding a collaborator.
I’m also not sure how much an artist can add to this story - the script tells it very well, and you’re mostly asking someone else to just depict what’s shown in the script. Get hold of “Making Comics” by Scott McCloud (sequel to Understanding Comics) and read Chapter 3 - Pictures and Words. I’ll try to summarise, but really recommend you get the book.
A comic strip has two lines of information - the text and the pictures. At their most basic, they tell us the same thing and reinforce each other. (eg. When we see your character doing a jigsaw, and his internal monologue says hes doing a jigsaw.) At other times they can fill in what the other stream is missing (eg “Worlds Best Mum” cup and him filling in the details about his wife). Other times they can contradict each other, or be unrelated, and so on. McCloud comes up with seven different cases for how the words and pictures interact.
You’re maybe doing a bit too much of the pictures just illustrating what the words say here.
I’m afraid I can’t give you much advice on how collaborations work, but I imagine each one’s different in terms of how much the artist adds to the script in terms of page layout or design of characters and settings. These are often the fun parts of the job for artists.
It’s a good script, and I hope I’m not being discouraging here. I’d recommend going over it again from an artists point of view, as if you’ve just been handed this to draw, and make a few tweaks.