This one has four black dot shadows in the upper left corner. Indicates a decnet amount of light was able to bleed through the backing paper? Any chance this was the last shot?
https://imgur.com/JxdYxc8
This one scares me, with the blob coming in from the right side. That's some very loose rolling or almost a crimp in a spot.
https://imgur.com/4pVcnWn
What concerns me is that the major light leak seems to be in the frame at the same spot again and again. Hard to believe that the frame size and winding puts the same area of the image in the same place throughout a roll.
Make certain that the spool knobs have all three screws. That the focus scale has a screw in place at each end. Put the film in the camera as it would have been when shot. See where the leak falls in the body and see if any screws or anything else seems off. Also put a frame inside the body as it would sit both before and after exposure and study the areas where the leak falls.
I'll take the foil or wrap from a new roll and place it over the exposed film. Then put the film into the new box with opening to the bottom. If I don't have a specifc film holder or other way to block light on hand.
For future reference, when tracking down light leaks you need to look at the full film, not just the image area. Don't care about the image or the scan- we want to see where the light has come from, etc. Just put a negative up against a lamp shade or such and use your phone.