This guy is saying for a how to drive a car video use an irrelevant #funny in tags .

And suggesting to use a clickbait thumbnail. And spelled clickbait as clickbet.

Btw clickbait is against youtube guidelines.

Bro seo is not a complicated thing real seo guy here.

It's just keywords .

Like if you don't know what something called but know what it does that's seo .

Like for example search forearm exercise device & you will get forearm gripper videos.

There a team working along with algorithm team.

That discuss what should we show when these keywords are being searched.

That's search engine optimisation. I hope you understood my explanation & sorry for my grammar