Which SEO service should I use for my work?

I am a developer myself and used to build websites through freelance platforms. I decided to grow my business, created my own service page, and planned to promote it. I wanted to do it through an SEO agency, but their prices are so high that it is easier to handle everything on my own. I understand the basics of search engine optimization, so I think I can manage it myself. Which SEO service is best for checking current changes in site rankings, its metrics, and everything else?

The main thing is not to mismanage your site due to inexperience. Sometimes search engines may suspect your site of violations, such as spam, and put it on a blacklist, from which it is very difficult to recover. It can even be easier to change the domain. But of course, that’s your decision. You can also use this SEO Checker https://pr-cy.io/ . It will quickly provide you with all the necessary data.