Choosing Wrong Keywords without Any Research,Duplicate content,Stuffing Your Website with keyword,Not Adapting to Search Engine Changes,Buiding Spammy links,Ignoring User Experince,Not fixing your Broken links..

CRM stands for Customer Relationship Management. It is defined as software that business hold every lead, every customer, every interaction and every deal under one roof also it allows to generate reports, runs a bunch of activities.

Start with technical SEO Audit,Optimize for Mobile,Speed Optimization,Work on the Links,On-Page Optimization.