It looks like you have an area of underexposure, not a light leak, at the top of the frame, which would be the bottom of the camera. This might be caused by the bellows impinging on the image area, but there might be some light diffracting around the bellows to give you a partial image.

Then on the right side of the frame it looks like you have a light leak that isn't in the filmholder, because the rebate of the film is clear, so maybe the filmholder isn't seated properly in the back, or the bellows isn't completely attached to the back of the camera, or the bellows has a light leak on that side.

On the left side of the frame there is a light leak that does enter into the rebate of the film. It looks like this film may have been lightstruck on that side before or as it was loaded.