I am losing time when exporting

[MundaneSounds]

I make bathtub running asmr videos that requires me to take a clip and copy and paste it several times over an hour or so. I keep losing time. It will say in editing that the video is 1 hour long but then I go to export it and the video is anywhere from 2 second to milliseconds to short. There's no gaps in the video and the frame rate is the same. I've googled so much and I cannot figure out what I am doing wrong. I've attached pictures that shows the time is 1 hour when editing and the loss of time in the output area.