CRS-4013: This command is not supported in a single-node configuration.

crsctl stop crs
CRS-4013: This command is not supported in a single-node configuration.
CRS-4000: Command Stop failed, or completed with errors.

 crsctl stop has
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'lhr2019ocpasm'
CRS-2673: Attempting to stop 'ora.asm' on 'lhr2019ocpasm'
CRS-2673: Attempting to stop 'ora.lhr19sdb.db' on 'lhr2019ocpasm'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'lhr2019ocpasm'
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'lhr2019ocpasm' succeeded
CRS-2677: Stop of 'ora.lhr19sdb.db' on 'lhr2019ocpasm' succeeded
CRS-2677: Stop of 'ora.asm' on 'lhr2019ocpasm' succeeded
CRS-2673: Attempting to stop 'ora.evmd' on 'lhr2019ocpasm'
CRS-2677: Stop of 'ora.evmd' on 'lhr2019ocpasm' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'lhr2019ocpasm'
CRS-2677: Stop of 'ora.cssd' on 'lhr2019ocpasm' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'lhr2019ocpasm' has completed
CRS-4133: Oracle High Availability Services has been stopped.

crsctl start has
CRS-4123: Oracle High Availability Services has been started.