Do I have to buy something to use the findings?
No. Every finding includes the evidence and the repair. Work through them in order of weight and you are done. The recommendation at the bottom exists because after a certain point the honest answer stops being a list of page edits, not because the findings are a teaser.
What Happens Next
Answer it for your own page
The inspection is free, needs no account, and takes a few seconds. It reports what is actually wrong with a page rather than what is generally true about pages.