The first custom fix run did find a few leftovers from Avast and removed them. (and that was even after I had you run the AVASTCLEAR tool.)
The first custom fix run did run a check with the Windows System File Checker (SFC). That made some system corrections.
I expect that Microsoft Defender antivirus is ON, enabled and protecting after that first run.
Please be sure you do the 2nd fix script I posted ( before) -windows-defender-disappeared/?do=findComment&comment=1518522
Also note, we have more to do. We need to check on the Microsoft Windows Update service.