Can't agree with you more. I used to buy gigs from Fiverr but no more. Now I am using Seoclerks because the gigs offered there are more focus on SEO and with very affordable price, starting just 1usd. Highly recommend Seoclerks for SEO services
Yea, I bought a gig from Fiverr. And, it ended up banning my adsense and blacklisting my site on google.
Perhaps my last article about Link Building would be informative to you https://newappsagency.com/seo-link-building
Its better you have to be cautious with how to build quality backlinks. establishing a solid number of link is a bit more challenging than paying a few other site owners to cite one of your pages.