How do I find Competitor Analysis Strategy

I find my competitors as per Keywords, where he made Backlinks.
what keywords they are using in PPC & Social Media.

Now my question is how can I find more in-depth what strategy they are using to achieve traffic, leads and other points too. Please suggest me the direction so I can achieve that one.

Check this post which tells you that

https://www.blackhatworld.com/seo/guide-analyze-your-seo-competition-without-spending-a-dollar.1074066/