Bluestacks - Mac Catalina !exclusive!

(if your Mac can)

: This is a frequent issue on Catalina. It is often caused by the security settings mentioned above. If "Allow" doesn't appear, try launching BlueStacks several times or checking for a "Helper Tool" installation prompt. Virtualization Issues bluestacks mac catalina

This is the most critical step.

(required): https://www.virtualbox.org/

Catalina had killed BlueStacks.