Trouble switching roles with SELinux

I just installed SELinux and made my user account mapped to the staff_u SELinux user, but now when I go to switch roles to sysadm_r via Code: newrole -r sysadm_r I get this error message: Code: system_u:sysadm_r:sysadm_t is not a valid context This is my first time useing SELinux so I have no idea where to go from here.

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