I know that you have to do it from the 'projects' page, but there's no projects in there, I accidentally deleted it the app, and all the projects when away. Is there a way to import my music to my android? I think you can use a computer, but I can't download MMJ on it.
If you click on the three circle with two lines, is there a way to share it with something and then download it?
I apologise in advance, but I am somewhat confused by your question.
I think you are saying you had MMJ on a mobile device (what sort of device?) but that you have accidentally now deleted the app but still have the project files? Is that correct so far?
What is to prevent you redownloading MMJ to your mobile device?
https://www.magix.info/uk/forum/export-musicmakerjam-project-from-iphone-into-windows-pc--1161419/ is a post discussing in detail how to export MMJ projects to PC but, of course, you will need Music Maker to be installed on the PC.
OTOH, if you also deleted the project files I think you are stuck.
Jeff