Does it appear that Apple garage band app prevents uploading loop pack?

In Garage Band app, whereas one can download loops & loop packs, the ability to upload self-created loops as a pack in the library appears unavailable.

Single loops can be saved into & imported from files browser, but if there was a choice to avail an ability to save self-created loops in the library pack, such choice will allow all users to save, upload, transfer & share their own self-created loops in a bulk form (not as separate individual loops) or even reference themselves using existing library theme. Seeing the song file (containing loops) through Files appears cumbersome or lackadaisical. Library theme of Apple Loop Pack for user access will be extremely superior than Files interface.

The basis to avail such flexibility is when an user records their own loop; as midi touch instruments, voice or drum, stacked vertically and horizontally, there could have been an avenue to slide over that entire loop pack into the library where currently only download choice appears available.

Pl allow a choice to slide over an entire self-created loop pack or save the same composition file (with probable export feature to different types: wav, aiff, mp3, etc.) embedded in an interim step) directly all together as one loop pack (& not limited to single file loop saving feature, as appears available today), and allow additional flexibility to Garage Band app users.

I apologize if such feature currently exists & it has missed my attention but I tried searching & couldn’t find. My self-composed songs unfortunately carry their heavy burden of their own loops, leading to high memory file size. It may be possible to export projects as a song to lean the size but retaining all the packaged loops of a song recital as a pack in my library will enable better choices as described above.

1. May Apple Garage Band team pl. avail packaging feature of self-created loops all together in one library?
2. Will slide over feature allow me to decouple my track song memory size from its own loops?
3. Will I be allowed to upload that library using Apple Garage Band Library Loop Pack instead of using single file loop saving and decouple from use of Files app?
4. Thanks for such great features in garage band & I wonder if such existing gap of favorite/ uploading self-created loops be available using existing framework, w/o need of programming something new.
5. Pl inform when available to reply / critique or need additional information with pictures of the desirable requirements.