considering how many garbage sites rank nowadays, you could probably rank without writing the content yourself but you need an AI writer and that obviously cost money
Also, I know that the making of a nuclear bomb was just an example, but from that example I can deduce that you're interested in keywords with a lot of search volume. BIG mistake! I mean, big mistake if you're a beginner, otherwise there's nothing wrong with targeting big keywords. But, as a newbie, you will want keywords with low search volume because those keywords - in general, not always - are usually low competition, as well. And low competition means easier rankings for you, and also less content needed to rank.
Personally, I recommend Rytr.me for content creation, but like I said, it does require money. I don't want to disappoint you because I used to be like you (and like many millions of others who come to SEO as a last resort for making money online, but this approach is bad because SEO is very expensive, and it's also not exact science so you have to try things out constantly, and to stay updated with what works, and so on and all these things take money and consistency, or consistency and personal effort if you can't afford to outsource them)... so anyway, as I was saying, I don't want to disappoint you (honestly), but you won't be able to make money with SEO without some initial investment, plus some monthly investment, as well. At the very minimum you'll need a domain name and hosting (which can cost you anywhere from $5 per month to up to $100 per year or more), and then you'll have to do everything (keyword research, content creation and optimization, competitor analysis, backlink building, etc) by yourself, and this takes a ton of time and energy (I've tried it in the past and it's excruciating, especially for non-english speakers like us). That's why, having at least $50-200 per month (at the very minimum) to invest in SEO (keyword research tools, backlink analysis and finding tools, etc) are pretty much needed to earn stable income with SEO.
Again, if you can somehow manage to get enough money to invest in content creation tools I highly recommend Rytr.me (it's my favorite such tool), but other tools are also good. Also, you might want to look into group buy services if you're short on cash. Some of them are very good and affordable for beginners until you make enough money to afford subscriptions to those tools, which should be your goal because tools like Ahrefs (one of my favorites) are very powerful when used correctly.
