There is not really anywhere to download Expired domains as such apart from expireddomains(.)net, the domains on this list are not immediate drops so you really need to search hard to find a good expired domain that has 1) Good Metrics & 2) A Clean Way Back History.
You may even search the site for an hour or so and find nothing worth registering
Then there are premium websites, that will give you domains as they drop however these domains have to go through their 'grace' period before you can register them.
The number one solution for finding and registering Good, Clean, Aged expired domains, is by means of using Scrapebox, along with Ahrefs and Way Back Machine this is like the 3 Musketeers when it comes to finding expired domains manually, and manually really is the best way!
I would have included Majestic's TF (Trust Flow) & CF (Citation Flow) metrics but this is known now to be non reliable and easily exploited, so don't trust these metrics, with expired domains.
If your looking for expired domains, with good metrics and a clean history, you can ping a message to my Inbox.
Regards,
Conor.