[CURRENT ISSUE] Sims 4 already running

I appreciate you so much for taking the time to help me throughout this frustrating process, I deleted all the remaining files of McAfee from my PC, and I am currently running a Malwarebytes scan, which will take a while for me to send the report (I will send it when done). While looking through my task manager, I found an app called "Antimalware Service Executable" but I was not able to end the task, because it says "Access denied?" But I looked through my settings and it shows I have the Microsoft Defender Antivirus disabled, but the program is still running in task manager, I send a screenshot of it below. Would I need to find another way to disable this? Or is it fine since my Microsoft Defender is disabled?

I am trying to avoid reinstalling Windows as I would have to reinstall 1.5TB worth of files, including every Sims 3 CD in which I would have to uninstall and reinstall each CD. Again, thank you for helping me with everything and I hope at least one of these alternatives will work before I absolutely have to reinstall Windows