The report flags these as probably adware:
Launchd: ~/Library/LaunchAgents/com.OperativeDesktop.service.plist
Executable: ~/Library/Application Support/.17503686062684007428/Services/com.OperativeDesktop.service/OperativeDesktop.service -s 6600
Details: Executable file is hidden - possibly adware
Launchd: ~/Library/LaunchAgents/com.11019459635502539271.plist
Executable: ~/Library/Application Support/com.3659435294062101829/8449490341493876945 D96FEF1A-A33F-5E60-886B-4AC7FD275DF2 1137
Details: Domain name invalid - possibly adware
Launchd: /Library/LaunchDaemons/com.OperativeDesktop.system.plist
Executable: /Library/Application Support/.17503686062684007428/System/com.OperativeDesktop.system/OperativeDesktop.system -t com.OperativeDesktop.system
Details: Executable file is hidden - possibly adware
You can use the free version of MalwareBytes to remove it, or you can do it manually.
1) In Finder press Command-Shift-period to make Finder show 'hidden files'. (as noted above, some of these files are hidden and you would not find them otherwise).
2) In Finder, press Command-Shift-G and paste the following line:
~/Library/LaunchAgents/com.OperativeDesktop.service.plist
then drag the file to the trash. Repeat for each of the following lines (each is a single, long line):
~/Library/Application Support/.17503686062684007428/Services/com.OperativeDesktop.service/OperativeDesktop.service -s 6600
~/Library/LaunchAgents/com.11019459635502539271.plist
/Library/Application Support/.17503686062684007428/System/com.OperativeDesktop.system/OperativeDesktop.system -t com.OperativeDesktop.system
Then restart your mac, and see how it goes. You may also run Etrecheck again to see if some part of those remain.
You can press command-shift-period again to stop showing hidden files.