Good SEO for Affiliate?

[Infrarotsauna Profi]

I'm looking for good SEO for backlink analysis and content analysis - free or at least not as expensive, I'm student.
Example: monitorbacklinks
But there is no content analysis there.
My page is just under construction and it is for a thesis für my Education.

[kathsomers]

Complicated my friend, seo is expensive. for example look at the ahrefs or semrush tools you will see that they are paid, for free I do not know any