It’s not the prettiest job but it gets the job done
My bag I’ve been using for all my college books broke at the strap. I thought about getting another one but didn’t want to waste the money. So I busted out my sewing kit for the first time and re attached the strap at the base and fixed a tear in the strap. It’s not perfect but it gets the job done! It feels stronger than the other straps now lol. Maybe I should add some extra thread to the other straps to prevent them from breaking in the future.