Hello, as I occasionally need music for my personal projects, I have a list of websites that I use as Creative Commons music libraries to get free music from. This list consists of websites that genuinely provide free options for commercial use, given that I've been able to verify that many of these sites that recommend this type of portal end up suggesting pages that do not actually have a free option, but rather provide samples that cannot be used for commercial purposes.

This content is not sponsored by any brand and that is my honest opinion and recommendation.

always with attribution

To use the music from these sites you have to credit the authorship of the music in the video, which means you have to mention somewhere in the video that this music is the property of a certain author.

Bensound

https://www.bensound.com/free-music-for-videos

This site provides tracks that you can use on YouTube and social media.

ccMixter

http://dig.ccmixter.org/

All the music here is free and allows for use in your projects.

audionautix

https://audionautix.com/

As it makes clear on the site, absolutely all the music on this site is free for commercial use, but requires author attribution.

unattributed

free stock music

https://www.free-stock-music.com/

Here you can find some tracks that can be used without attribution, although if you can add it, so much the better.

freepd

https://freepd.com/

On this site all their tracks are free for commercial use, nor do you have to credit their authorship if you don't want to, although it is recommended.

Musopen

https://musopen.org/music/happy/?license=CC-BY

Musopen is full of classical music tracks that are in the public domain and therefore you can use without giving credit at all, it belongs to everyone and we can all use it in our projects without fear of a strike.

Honourable mention: soundcloud

SoundCloud occasionally hosts music that can be used freely, including for commercial projects. You have to check the description that authors add to their creations. What I am putting here is an example:
https://soundcloud.com/free-beats-io

credits: featured image by Photo by Dominik Vanyi English (UK) Unsplash