How do I do free keyword research?

9 Free Keyword Research Tools to Help Plan Your New Site

  1. Choose the best keywords, based on your industry, monthly searches and more.
  2. Create a content calendar that’s based on related long tail keywords.
  3. Learn more about your competition.
  4. Know which keywords on your targeted list have the highest search volume.
  5. Boost your search engine rank.

For More Information Please Refer: https://neilpatel.com/blog/10-free-keyword-research-tools-to-help-plan-your-new-site/