Degoo, Terabox, Jiocloud, MediaFire support rclone?

Hi, welcome to the forum.

First of all; to support a new provider it must have a (public) API. Next, this being an open source project with volunteers, someone must be willing to invest the time required to implement it in rclone. In general: Unless you can do it yourself, or can find someone who are willing to do it for you, maybe hire/sponsor a developer, it's not very likely, I'm afraid.. There are currently 63 open tickets on GitHub regarding new backends, including: