I've been struggling for a while to put music on my profile, and ik other people probably struggle too so:
<iframe width="0" height="0" src="https://www.youtube.com/embed/IDHERE//?&;amp;;autoplay=1&;loop=1&;controls=1" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="" loading="lazy">
</iframe>
</iframe>
---
basically just replace IDHERE with the video ID of whatever yt video you want.
EXAMPLE OF VIDEO ID: https://www.youtube.com/watch?v=Szbmtpe2SbU
(the red part is the id only copy that part)