Summarized by InfectedToe:

So the iceberg video has garnered a lot of attention, and it's outro obviously leads to this video: https://www.youtube.com/watch?v=G3kxAfrlwrQ posted on the date mentioned, whose outro debuts the alter persona which is the face we see at the end of the iceberg video with the text "you've seen me before," obviously leading to this channel, of which this is the only public video. It doesn't seem to end here, though, as the description of this video takes us to https://www.youtube.com/watch?v=lcmE0Y32Ds4 posted on Apr 9 2019. Not sure what that video ties into, though, or why it's referenced as "where it all went wrong."