Which antivirus will you prefer for malware? I used Avast,node32 and Avira some years ago but all these antivirus delete my necessary files and also hang my PC, so I uninstalled and never used again so far.
If we doesn't click on any site nor delete then still possibility of any malware attack?
Buddy as long as you don't bypass your own security by installing the software from third-party sources and cracked versions of the security firewalls provided by the Windows itself. No need for additional layers, avoid clicking suspicious links and you're safe.
I've encountered similar issues back in time but after I realized my own few mishandlings, after that never I realized to have antivirus software. Hmm yes, buddy if you follow never click on unwanted sites, and don't install any third-party sourced software you can go safe without any antivirus software.