There are a bunch of online tools that are free and let you upload a PDF to have it go through OCR.
Just Google “Free PDF OCR” and click through all the ads to upload, then give them a temporary email address to get a download link to the finished product.
Hot tip: There are free temporary email address sites too, if you need one to avoid getting on their ad lists.
A lot of the work they do is aimed at thwarting the business models of cyber criminals, scam sites, etc.
Their reviews are probably from the people who had a good thing going using bots to scrape PII or take advantage of free trials/free tier SaaS products but were suddenly put out of business by cloudflares captcha tools.