Can you explain how it works?
I do it with my library in USA. I visit that library website, and ask to checkout or put the book on hold until they have it available. I only choose books that are in the Kindle format, which is most ebooks. Also can use the Libby app which most libraries are partnered. There is no limit except X number of loans at the same time.
When I check out, my account is connected to my Amazon Kindle account, so from checkout I am redirected to Amazon. I could electronically send it from Amazon Kindle “My content “ section to my kindle device, though I prefer to download and transfer by hand via USB cable.
Audio books are mostly (or all) only available to listen using the Libby app on computer, phone, or tablet. Some ebooks, or very few,, are forced to read in Libby. I think, Magazines are only Libby