Next time you're scrolling through your FYP, take a look at how short the video descriptions are. You'll likely see things like this, 1 to 2 sentences or less. Some of the best ranking sites in SEO right now are social media, YouTube, Facebook, Instagram, TikTok, LinkedIn, X.
Don't do this. Instead, take your video transcript, use it as your description. If you don't have a transcript, spend 30 seconds talking to ChatGPT about what your video is about and ask it to turn it into a description.
The FYP will give you a lot of viewers that are not related to the content that you make. Google, on the other hand, will give you people specifically searching for the content that you make. People searching for what you make are way more interested in your content than randos from the FYP.
Your videos will show in search for years if you do this. The long tail of viewers who care about you will be crazy long. Don't do this.
Do this.