The best way to get data about keywords is from the Google Ads Keyword Planner- if you have access to it.
I think one of the most important parts of keyword research is collecting data for keywords. This helps you know what phrases other people are actually searching for vs. what you think they might search for.
Of all the ways to collect data (from free to third-party paid tools) my favorite is the Keyword Planner because:
Unfortunately, if you do not have an active Google Ads campaign you might not have access to this tool. Instead, you might need to use the Google Trends tool for collecting keyword data.
After using the Keyword Planner to get data for each keyword, you’ll know what phrases you should focus on. From this information you can choose the phrases for which you’ll optimize each page. This allows each page to have a common topical focus that not only helps your SEO- but is clear for users of your site.
That being said, there are some limitations with this data: