drum brake springs

That will help you. I wont nit-pick the guys video because techniques do vary. Part designs vary too.
A small cable is more common that the connecting rod shown there. When there is a cable there is a cable guide. It's half moon shaped sheetmetal and has a small neck that fits into the hole of the shoe. First make sure the neck is there and not distorted or worse. Make sure the neck goes in the hole so the guide sits flat against the shoe.
The upper end of the cable goes on the spring post first. It has a flat side that goes to the back. Drape the loose end of the cable over the brake linning out of your way. Use a thumb to hold the cable guide in place while installing the spring on the post.
Once that much looks good you can bring the loose end of the cable down and place the cable in the guide.
One thing that bothers me about that video. The guy stuck a finger through that hole between the wheel studs.Not sure why. No problem for him but.... that was a hub mounted spindle and not an axle.
Under the right shade tree with nuts around, you could get a finger broke.
And I still prefer the single piece spring tool over the scissor type. That scissor type is just to cumbersome for me. Have fun.