As of this writing, AlphaTheta has not released a driver for Sequoia. Some users report success with v3.0.1 after disabling SIP and allowing all system extensions. However, this is not recommended for production use.
The Pioneer DDJ-SR is generally a on macOS. This means that for many users, the "story" is a simple one: you plug it in via USB, and the standard macOS audio driver installs itself automatically. pioneer ddj-sr driver mac