If I was to start over with a new channel I would first sit down and develop a plan of attack... especially for that first week (month, and even the first six and 12 months). That plan would start with formulating/scripting a dozen or so videos with additional repurposed/supplimental Shorts videos. Then I would film those videos. Next I would drum up as much excitement amongst my family and friends as possible; I'd put out fliers around town marking a fun date for the dropping of the first video. I would try to incorporate some kind of treasure hunt and/or giveaway into the first seven videos. Then I would drop an absolute BOMB of a video on that date, with an open-ended finish that leads everyone into the next video. I would probably do that for seven days straight the first week, really get things out there.