Try the following:
https://www.avast.com/faq.php?article=AVKB11#artTitle
https://singularlabs.com/uninstallers/security-software/
https://singularlabs.com/uninstallers/
https://singularlabs.com/uninstallers/other-software/

Look around the Singular site and you may find some other stuff you can use.