I´m creating original audio for reels, that you can download for free from https://freesound.org/people/SifNeo
The music and audio files are released under https://creativecommons.org/publicdomain/zero/1.0/ and are therefore free of charge for you.
When you create a reel @ Instagram with original audio, your username will be shown. If and when you make use of the audio from the Instagram audio library, then the audio description will be of that artists work.
Here is a few examples of the free Original audio for reels created by Sif Neo:
I´ve used Kapwings: https://www.kapwing.com video and audio tool, creating the reels. Another video tool that´s recommended is InVideo https://invideo.io/