How to remove background from ... Note

How to remove background from picture without losing quality?

Hi everyone, I'm fairly new here and don't have much experience with photo editing in general. I recently took a picture that I really like, but the background is cluttered and distracting, and I'd love to have just the main subject standing out on its own, ideally with a transparent or plain background so I can use it for a project I'm working on. I've tried looking up a few tutorials on how to remove background from picture, but most of them assume a level of familiarity I just don't have yet, and I keep getting confused about which approach actually works well for clean edges. What's the general process for cleanly separating a subject from its background?