MalwareBytes is "all you need":
Malwarebytes offers real-time antivirus, advanced anti-malware and privacy protection for all your devices. Launched in 2004 as a free virus scan, we still offer a free basic version 20 years later. Learn more.
www.malwarebytes.com
IMPORTANT:
Select the "home" option.
It's a FREE download
IMPORTANT:
You DO NOT NEED TO BUY A SUBSCRIPTION to run MalwareBytes.
It will run FOREVER IN FREE MODE.
When you open it, IGNORE the button to "Upgrade Now" or "Activate License".
Just click "Scan".
Again, you DO NOT have to buy the pay-for version!