If I were you, my temporary fix would consist of the following. Essentially you have to keep water from geting into the garage. But the whole area is sunken, inside the garage and out. It’s a 4 foot long fix, (?) i think , from the yellow bricked building to four feet away, (?), where the concrete has sunk. So, I would buy a bag of cement, and 15 or 20 new and hard bricks, or solid cement blockshttps://www.awbsltd.com/shop/uploads/images_products_large/782.jpg and I would, with the cement placed thickly on the soon to be repaired area, line them up lenghtwise, from the left to the right, from the sunken area, lenghthwise side by side, all the way to the home. Only by cementing the whole area will you keep water out. And you can easily drive over the bricked area once it dries completely. You can make a mini ramp 6 inches long on both sides of the brick or cement block. You can for added measure, put cement on top of your row of bricks, and make the cement oval shaped like a speed bump, to give you more height.