get the Malwarebytes Premium. Yes you have to buy it.
They don’t work for free.
I bought Malwarebytes Premium when I purchased my computer and it has worked fine although the one time it “found” a problem was with a program I *wanted* to install and turned out to be a false positive.
I saw a YouTube video where some techie dumped every virus and malware on their computer all at once with Malwarebytes installed and it pretty much hosed the computer but I asked myself “how likely is that to ever happen?”
“get the Malwarebytes Premium. Yes you have to buy it.”
I just bought it for my Win 7 machine. Works great and is fast scanning.