I came across this website thanks to someone sharing it here, so I thought I’d do the same: https://fmhy.pages.dev/storage/#youtube-frontends

I now use Waveform from Tracktion. Not open source, but all must have features are free. And supports linux, mac, and Windows.

However, if you’re used to Ableton Live, you’re probably better off using that. Good luck on your adventure pirate!

And for iOS I can recommend uYouPlus (https://github.com/qnblackcat/uYouPlus). The cheapest way to sideload it is using AltStore. But there are other services which offer sideloading on device, these don’t require a computer.