Yes, tags are mandatory when posting a question and useful when looking for questions to answer.
And yes, Google is worse than useless, it doesn't even search for what I type in, and when I force it to do that, it returns SEO spam websites, bot-farmed-content, clickbait and advertising ahead of useful content. Or instead of useful content.
That's weird, Stackoverflow is almost always my first result. Perhaps by accident you clicked on those spam websites too often and now Google thinks you love them.
As for asking, I suppose if my question has never been asked before by someone else, I'd rather not know the answer.
And yes, Google is worse than useless, it doesn't even search for what I type in, and when I force it to do that, it returns SEO spam websites, bot-farmed-content, clickbait and advertising ahead of useful content. Or instead of useful content.