I want to replace some keywords as I was targeting wrong keywords after checking competitors website I found they are targeting good match keywords related with my services but I have no idea which I choose and how I use with the word "best". Please suggest me some suggestion here.

1. Analyze the Intent of the Search
2. Know the Different Types of Keywords
3. Use Tools for Keyword Research
4. Refine Your Keywords Using LSI (Latent Semantic Indexing)
5. Analyze the Competition
6. Keywords and Matching Media
7. Create a Link to the Landing Page

Choose a relevant competitor in a paid search.
Click on the number of missing keywords to get a list.
Apply filters to select the most suitable keywords.
Export a list of keywords.
Compare up to two different websites with the target one.