There are no Mac viruses in the wild.
Yes, there is plenty of other malware out there, but your can avoid allowing this stuff to be installed on your computer.
Keep your software updated and macOS is capable of keeping itself secure. There is no need to run any anti-virus, cleaners, optimizers or VPN apps. These apps often cause more problems and headache than they prevent because they conflict with the macOS’ built in securities. If you have this type of app installed, you should uninstall it according to the developer's instructions, and use best practices when using your Mac.
If you want to keep your Mac secure, follow this guidance:
• Keep your macOS and other software up to date.
• Don’t click links in email.
• Don’t download apps from unknown websites.
• Don’t disable your Mac’s built in security.
For more info, please see these support documents:
• Effective Defenses Against Malware - Apple Community
• Avoid phishing emails, fake 'virus' alerts…and other scams - Apple Support