Even if you aren't a PC player, just by looking at this subreddit feed, you can notice that PC cheaters are ruining the few games we can still get, and the reports are always increasing.
I did a quick research to find out where these cheaters get their stuff from, which lead to a public forum in which I took the screenshot above. This dude is _selling_ a PC hack for a monthly fee since october 2018, and he still is.
I don't want to blame anyone, and I'm tagging /u/FoxhoundFPS & /u/ATVIAssist just for visibility. I'm a developer myself and I get that things like anti-cheats can take time to improve. But I'm a bit shocked that a cheat findable in a public post in a public forum (with 950+ post interactions) is not noticed by Treyarch. This dude (and others, I guess) are literally getting paid by ruining your game and your (paying) players experience.
I reported to Treyarch this user and post privately 2 months ago, but by the looks of it, nothing has been done.
Please upvote for visibility, PC playerbase deserve to, at least, play the remaining life the game still has. Doing nothing will make it die sooner.