As some have said, not essential-just convenient; however, you don't need a machine if you follow this advice on record cleaning:
Neil Antin's paper is thorough and evaluates all types of machines--but his process does not involve anything but easily obtainable cleaner and regular household items--the process is covered in Chapter V if that's all you want to read: https://thevinylpress.com/app/uploads/2021/03/PAC-Vinyl-Records_2021-03-01_pdf.pdf (Note: the "Vinylstack" label protector is no longer available as they've gone out of business but you can improvise
Neil Antin's paper is thorough and evaluates all types of machines--but his process does not involve anything but easily obtainable cleaner and regular household items--the process is covered in Chapter V if that's all you want to read: https://thevinylpress.com/app/uploads/2021/03/PAC-Vinyl-Records_2021-03-01_pdf.pdf (Note: the "Vinylstack" label protector is no longer available as they've gone out of business but you can improvise