Understand this simple search query

Elastic Stack Elasticsearch
1

this is probably a very basic question but I have 2 searches below.
search 1 returns 4 values, I just want it to return 1 value(DeviceCommandEvent). how do I do this?
search 2 retruns 3 values which I would expect, that is everything but the value DeviceCommandEvent. which I understand.

search1
eventType:"DeviceCommandEvent"
returns these 4 values:
DeviceRequestResponseEvent
DeviceCommandEvent
DeviceUpdateEvent
CattleUpdateEvent

search2
!eventType:"DeviceCommandEvent"
returns these 3 values
DeviceRequestResponseEvent
DeviceUpdateEvent
CattleUpdateEvent

2

ah scratch that, I worked it out, there was other fields filtering going on in my search that was creating this confusion..hmm