promote my channel using youtube's ads

So i have a kid channel marked as child channel, i have 2k subscribers, and i'm uploading 5 video at a day, all of them are my creations. I did some ads to promote my channel but my public watch hours only 182 hours because of ads won't count as public watch hours. How can i exceed 4000 hours...

so some people say it is a good way to jump start your channel and possibly get more subs and views and tbh that is actually how i found out about markiplayer when he had less then 1MIL in subs. but anyway i was wondering from any experienced youtubers out there if this is possibly a good idea...