I've been using computers since 1980.

The only time I have seen malware was on my Dell laptop a few years ago running Windows 7. It came piggybacked onto a download of the 32 bit version of CCleaner by Piriform at File Hippo, which is supposed to be a reliable web site and supposed to check for malware. I had Malwarebytes and Avast on my laptop but they failed. CCleaner continues to be a popular program and File Hippo continues to offer it.

That's one reason Windows sucks. Took me a long time to restore my laptop to its previous condition, and that was with a backup.