Video Promo Recommendations

Hi, I have some great videos posted but my following is too small and they aren't even seeing it. I feel like what I really need is a good video promo.

I've tried Google Ads and have gotten the CPV very low (less than 1 cent), but it is practically worthless because these viewers don't convert. I need recommendations for video services to get real subscribers and engagement. Advertising is generally worthless in this regard, so possibly forums or influencer marketing recommendations too.

What services have worked for y'all to create viral videos? Please advise.

I used to buy shoutouts from other youtubers with bigger youtube channels. You can post in the WTB section on this forum too...or maybe try fiverr