There is no magic database. If you want premium speeds in JDownloader 2, you either pay for a debrid service or accept free-tier limitations.
Searching for "working" premium accounts through third-party databases is a common way users accidentally compromise their systems.
Leo leaned back. He knew the drill. The big file-hosters had turned into fortresses. You either paid $15 a month for their "premium" service, or you suffered.