Check the film edge markings/frame numbers first.

• If the edge markings are visible, the film was processed but not exposed properly. That points to a camera/shutter/exposure issue.
• If the edge markings are also missing, the problem is almost certainly processing, not the camera.

For completely clear negative film, the most common cause is fixer being used before developer, or the chemicals being mixed up/contaminated. Another possible cause is processing the film in the wrong chemistry. In either case, the image gets removed and the film can come out clear.

Because you mention only tiny streaks, that still fits a processing error more than a camera fault.

Best next step: inspect whether the edge printing is present. If not, discard any chemistry from the bottles used for that roll and remix fresh chemicals before processing more film. If the edge printing is present, then investigate the camera for a no-exposure problem.