The algorithm does the targeting
You do not need to find the audience. You need to make content the system can categorise, then it finds them. That means being obvious about your subject in the first two seconds.
Ambiguous, arty openers get shown to nobody in particular and perform accordingly.
Make problem content rather than product content
Nobody is searching for your brand. They are searching for the thing that is annoying them. Content that names the problem gets shown to people with the problem.
The product can appear at the end. It should not be the reason the video exists.
Use the comments as research
Every question in your comments is a video. Making content directly from audience questions is the fastest route to finding the right people, because you are answering something they demonstrably asked.