Good Day Tamim_ST,

My name is Carlo, I am also using Windows 11 pc and community member like you.

There is an antivirus came pre-installed in your computer , it is called Windows Security, it works like any other antivirus , this is the only antivirus I am using in my computer and it perform smoothly.

You can visit this link as reference to know more about Windows Security.

https://support.microsoft.com/en-us/windows/sta...

If you want to have a third-party antivirus, you can try the Malwarebytes

https://www.malwarebytes.com/mwb-download

I hope the information above helps.

Have a wonderful day ahead and stay safe.

Sincerely,

Carlo T.

Standard Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.