Getting a featured snippet is going nowhere

Two things people miss. You basically have to be ranking on page one already, Google pulls snippets from pages in the top results. And the answer has to be right under a heading that matches the question, in about 40-60 words, before you expand on it. For "how to" queries use a numbered list, for comparisons a table. Fair warning though, a lot of queries show an AI overview now instead of a snippet, so check the SERP actually has one before you chase it.