I want people to target the specific keywords I've mentioned. Most preferably with a link to my main post. Like the example above.

Like this:

How Often Should You Buy And Sell Crypto depends on this or that but using the strategy called Dollar Cost Averaging seems like a very good approach.

That keyword is linking to my post, even though it's not the title I am using for my own post. This is called an "anchor link". I want people to use any of the keywords I mention, when linking back to my post.

So you don't need to use those keywords as titles or subheadings.