There are countless SEO tools out there. Some of them are free of charge, but their results and analyses will be limited or they could spam you with ads. Some others come with a premium. But even so, you need to understand how to apply the info you get to make something out of them.
Tools like seo Clarity, Surfer or Semrush are useful for those who know what they’re doing. If you’re not already seasoned in search engine optimization, it’s wiser to leave it to a professional. After all, SEO isn’t just a simple one-time operation, but a long-term process.