Thank you for your responses. But they did not answer my question completely.. sorry.
Thank you angelwatt. I have taken another stroll through my preferences, but there are still some files in there I do not recognize so I do not want to delete them and screw it all up.
I started using AppCleaner a while ago due to AppZapper costing money. Previous to using AppCleaner I deleted some apps inappropriately, leaving associated files behind. I do NOT remember the names of those programs so I can't find them using finder. I am looking for a program that seeks out individual files that are not associated with any programs or files. A program that knows which files are just there for no reason. Thanks in advance for any more responses.