How do I find the best keywords for my website?

Hello! I would like to give some recommendations on how to find the best keywords for your website.
1. Determine the priority sections that need to be worked through first;
2. Make up the structure of the site, and then collect the keys;
3. Collect keys in a specific city, not a region or country;
4. Collect all possible variations of the topic titles of articles/goods/services;
5. Make key collection a priority search engine for promotion;
6. Consider keyword competition;
7. Eliminate implicit duplicates, untargeted keys, and dummy keys;
8. Group queries by TOP search engines and human logic.