Bluestacks 5 is not available now.
cd /Application/Genymotion.app/Contents/MacOS/
./gmtool admin -h
gmtool config --hypervisor qemu
--hypervisor <virtualbox|qemu> Uninstall your BlueStacks completely as mentioned in this article.
Once done, we would request you to launch “Terminal” on your mac machine and run the below mentioned commands one by one: sudo kextcache --clear-staging sudo kextcache -prune-staging sudo launchctl enable system/com.BlueStacks.AppPlayer.bstservice_helper
Once you have run the command, please check if you have any previous installation of VirtualBox available. If you do find it, then we would recommend you to remove it completely from your machine.
Download the latest version (4.270.1.2803) of BlueStacks through this link and then check once whether it works fine for you or not. Note: Upon uninstall of BlueStacks, all the data related to BlueStacks will be permanently removed, however you can retrieve the game/ app progress by signing in with the Google Play games or with social media platforms like Facebook etc with which the progress is synced. Therefore, please make sure that your apps data is synced with a relevant account before uninstallation.