I have noticed this problem too. Many platforms just concentrate on having a huge collection of tracks but when it comes to quality of sound, it’s absolutely below average and totally kills all the effort I have put on my video. Check out Artlist as they really put a lot of effort in curating their collection to only add tracks that are of high quality.
You can find more information here https://artlist.io/blog/artlist-news/start-licensing-music-the-full-version-of-artlist-goes-live/
