Hi, Peter. I'm sorry to say your alignment is dominated by the floor tiles, your object has little texture, you have not used masks, you dont fill the frame with the object, your camera is not the best for resolve texture in such flat materials... so its hardly posible to get good results.
This "simple" object requires special skills and experience. I would recommend you to start learning what feature points are, why "structure from motion" methods need them so much, and you will understand why you did not succeed here.
Best regards.