I'll have to check out your page. My son has a non-car YT channel that by happenstance had one video go crazy-viral (almost 340 million views) and has since grown his channel more than we ever thought possible (318,000 subscribers). He mainly posts shorts, so not in the same vein as yours, but he still has made a little money on it and we post new shorts (usually around a minute or less) weekly, although YT had a 30-day challenge for October, so we posted one every day of the month.
His channel is PJ's Radical Playz (
https://www.youtube.com/channel/UCrF...1gV3Z71gJKGpRA)
After watching his channel grow, I found that you're 100% right about not knowing which videos will perform and which don't. We may start making some longer ones as time goes on as that's where the real money comes into play.
And one comment regarding monetization, the general YT rule is that you need to have at least 1,000 subscribers and at least 4,000 watch hours over the past 12 months.