Amazon Product Page Parasite SEO

Hi,


I am trying to get my Amazon product page to rank in Google also (we already rank well in Amazon).

I bought some tier-2 links already from fiverr from https://www.fiverr.com/havesomefun and we are now ranking for 3 keywords,

Please can you advise meL

1. What other types of links should I buy and where from?
2. How many links should I buy per time and how often should I buy them?
3. Once the page is ranking in Google, do I stop buying links?

Thanks