I started this hobby with an Ender 3 a few months ago. Look into motor dampers. They honestly take away ~90% of the noise and loudness.

I bought these: www.aliexpress.com/item/Funssor-12pcs-lot-NEMA-17-Steel-Rubber-Stepper-Motor-Vibration-Dampers-Imported-genuine-42-stepper-motor/32825669027.html

Make sure you find the right dampers for your motors. Ender 3 uses Nema 17.