I was on this flight watching the approach on the video. It was a crystal clear day in Seattle. Came in wobbling on both missed approaches. Announcement after first go around was made by same Venezuelan Captain who had introduced the crew in DXB, said go around was due to "...er, traffic". Second missed approach announcement had a British accent, the trembling voice as noted by OP, was attributed to winds. The entire airfield looked clear at least on the video and felt like we were about to touchdown both times. Changed direction for the third approach, came in smooth and landed. Something seemed amiss, wondered if a rookie was involved.