I read that title as “Is there a FOSS alternative to apps like TikTok?”

I don’t think it’s possible. iTunes requires a full OS install, so you’ll have to just run it on a VM. And Apple has things locked down so much that the only way to do full iPhone/iPad backups is through iTunes.

You can start posting on !selfhost@lemmy.ml instead.

It’s not selfhosted.

I also wanted something like this, but I don’t want every single community. I ended up making a not account that I use to subscribe to random communities I might have a fleeting interest in, but don’t want in my subscribed feed.

This was going to be my suggestion!