Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

Hello. I'm not sure if it's related in any way to piracy, but I don't know yet of a better place to ask this question on Lemmy, and people often search for PDF magazines on pirate sites (like those from megathread). I have some old magazines, which I would like to scan - page by page - into digital form (for now for personal use) and merge scanned pages into PDFs for convenient reading. Some of these magazines have hundreds of pages each, so I would like to convert them to digital both fast (preferably a few pages in one minute), reliably (without blurred text and images in some places on each page), and in best quality possible. Do I need a professional scanner (for example in a multifunctional office-grade laser printer)? Could a decent portable scanner do the job just as right? Or is my phone's camera with an appropriate scanner app completely sufficient for that? I would like to read your thoughts about this.