By now, you've likely seen all the "gurus" in your Facebook feed. Some of them are more popular than others. What you'll notice is that the ads you see that have the highest views and engagement are normally the most successful. Use a site like Similar Web to study those ads and see what they're doing. Join their lists and embed yourself in their funnels. That's an important part of the process so that you can replicate and reverse engineer what the most successful marketers are doing.
Lastly, here’s one more pro tip for YouTube ad: Don’t use a template or “slideshow” with your logo on it to start off your video. While you do want to show your logo somewhere within the first five seconds, it’s better to show a clip with your logo on one of your products or services—or employees—instead of plastering your logo up on the screen. Instead of letting them know who your company is, it deters many viewers from staying on your ad because it loses their attention and interest.