You only have to think about this, set up 10 simple sites and target low hanging keywords, just get them earning $100-$250 a month, and your on your way. you can basically do this with minimum costs.
Purchase keyword domain names new & old, get trials for semrush keyword research, target related keywords using AI for content and rank those articles. don't just prompt in ai and use there articles straight up, actually manually edit the article after producing it. as long as it answers the keyword query and is related, google will rank you.
Alot of my ecommerce blog posts are ranking 1 spot for every keyword just because i've used AI and then edited it myself.
a keyword getting 10-15 searches a month might not seem a lot to people, but when i have 7,000 keywords number 1, it adds up.
I've never ever paid for a backlink for my ecommerce website that users this strategy
Edit - i now write articles about keyowrds without even monthly search results.