Link building strategy for an e-commerce site.

What is the best strategy for an e-commerce site that has more than 5k products?
for a whole year ill building links but I just make links with some SOPs.
I want to do quality link building.

Recently I know that! you work on a category if you have an e-commerce site.
But I have 100s category how to know. so ill go on top pages in ahref, for finding links that are good traffic potential..... then lost.

What I want...
I need a great amazing process in which I sort out some links to focus on backlinks. How to recognize potential categories that have the ability to rank on google. step by step I have ahref.

Do a good keywords research and target websites that have nice amount of traffic coming from Tier 1 countries