In case you did not know yet: there are transcripts for some of videos on Youtube. The transcript is time-stamped, the video will jump to the correct position

In case you did not know yet: there are transcripts for some of videos on Youtube. The transcript is time-stamped, the video will jump to the correct position when clicking a sentence and it loads completely at once, so you can use the in-browser search on it. Open the three-dot-menu below the video content and open the transcript from there.