It’s not possible usually without spamming.
People who say to just sign up to a billion websites and then “trade backlinks” or other BS are laughable.
No, I cannot spend every single second of every day spamming my website around to get 2 viewers a month.
All while I’m paying 30 plus bucks a month to host and run and 5+ hours a day adding content to my site.
This is with an excellent niche AND EXCELLENT CHOICES IN WELL-SEARCHED TERMS AKA SEARCHABILITY DOMAINS. I have seen zero benefits from any means of “building backlinks” other than merely spamming the site around so much that it’s impossible to not get at least a few curious to click given the appealing name.
Otherwise I’ve seen maybe two cents in revenue over 3+ months and 80+ dollars on site maintenance plus 50+ hours of work.
Anyone who says the adult niche is “profitable” is either stupid/lying or are the 0.00000001% that take 99.99999999999999% of the wealth AKA how most of the real world works anyways as everyone works for peanuts while a tiny portion earn the lion’s share for doing nothing. LOL