I had the "unrecognized disc" issue for about a year and finally fixed it for $15. : r/PS4
How to FIX PS4 Unrecognized DISC that won't start! (4 Steps and More!) - YouTube
How to FIX Unrecognized Disc Error on PS4! | SCG 2020 - YouTube
How to Fix A PS4 Unrecognized Disc Errors
Hello so my ps4 keeps saying unrecognized disc and I have tried almost everything to get it to work but it keeps saying unrecognized disc can anyone help? : r/consolerepair
How To Fix “Unrecognized Disc” On PS4! (Easiest Method) (Takes 10 Seconds) - YouTube | Fix it, Method, 10 things