Is this present on all rolls? The film is not wound tightly over the rollers?
Or maybe the lens and shutter have been removed and were not put back correctly. Or, on the worst case, the lens has been disassembled and reassembled incorrectly.
Front standard not locking correctly or maybe wobbling. Where is the shutter release, on the body or on the lens?.
Such a fuzziness should be apparent even on ground glass, using the loupe. A bit of work of course due the tiny image.