I'm an old man. "Back in my day", we heard by word of mouth, the radio, browsing at music shops, etc.
We can still do that in the digital age. When someone posts a random song, anywhere, check it out. Try checking out internet radio of genres you like (I'm finding a lot of Classical this way currently). Check out Bandcamp and IRL music store every once in a while just see what calls to you. Sometimes, let the cool album art guide you ;)
36 TB usable space on my NAS... Music doesn't even make a dent