>>3299569>>3299570There's a number of issues here. Firstly the backlighting is nowhere near strong enough for any of detail or colour of the film to be scanned. Secondly the scan isn't focused/lacks any sort of sharpness as the scanner is not optimised for this sort of thing.
My only suggestion would be to use some sort of backlight (I'm assuming your scanner doesn't have one) such as a phone or tablet. At the moment it's barely getting any sort of colour depth.