Youtube made a guide how to grow on youtube. You can read it directly Here They did a bunch of surveys and even scanned peoples brains while they were watching youtube.
What they found, viewers prioritize authenticity, meaningful storytelling, and feeling something over high-budget production values.
Specifically, four emotions that keep people watching longer.
happiness
inspiration
relaxation
feeling informed
Different age groups value different things in a video:
For viewers under 35 original ideas and learning something new.
For viewers over 35 value trustworthiness and storytelling.
Instead of copying big creators, focus on being genuine, relatable, and open about your process.
Don’t hide mistakes or quirks.
Talk to viewers like friends.
Share personal stories.
Show what you care about.
Meeting basic technical standards still matters, but emotional resonance and authenticity will make your channel memorable, encouraging viewers to return for more.
In summary what youtube want's is:
Be yourself, provide real value, focus on topics that excite you, and care about your viewers. That’s what keeps people watching.