now after hearing so many positive things about building your own PBN I made the step to start one for myself.
I had built a health related site and bought some expired domains having PRs of 2-3. For every blog I used whois privacy protection, completely unique content, some images, and always a different hoster!
After building the links, I started out with just building links with its url. Two weeks passed and my site hit page 5 for its main keyword.
Then I built another link to a inner page. That one hit page 3 after some time but no improvement for the main site. Then I built another link and after that it hit page 3. Another 2 links and then it stopped. I always used different anchors. After building 2 highly relevant blog comments with a name as a keyword and another blog post on someone's theme related blog it went down to page 8 and stays there for around 3 weeks.
I have no clue what I did wrong.
My site is not in english, but the blog post I got was in english.