I usually listen to my favorite OST music when I want to focus while programming, but sometimes I need to change the background music and listen to something different.
I found this site years ago, and it’s the best and largest sound collection I’ve ever seen. It’s not generated by AI. Everything is recorded by a passionate sound engineer and audio enthusiast. There are many different categories for various purposes, each with a huge number of sounds and extensive presets and settings.
Although many sounds are available for free, I recommend making a donation to keep the project up and running. (This website is ad-free, and even respects user privacy.)