No expert but if search reach is a goal given your suspicions on YouTube then I second all the comments on having your own page, working on SEO and possibly paying for Google Ads. If the model on YouTube is similar to search then less engagement could be related to someone else paying more to rank similar searches higher.

Also I was thinking about this the other day that I don’t think a good book taking someone from exchanges and buying all the way through to multisig and FOSS wallets like sparrow doesn’t really exist. Would get out of date fast but if your primary growth market is new people in the space would be interesting to see what a guide book to self custody would do on Amazon. Books are easier to go at your own pace instead of rewinding videos.