[LightDestory]

I am going to use the same response model of @Mashiro because I find it perfect to reply with:

My main PC (Laptop)
OS: Windows 10 Home 20H2 (2009 version)  64 Bit, I could upgrade to Pro using a Edition key but the Pro edition just add GroupPolicy stuff that doesn't concern security and a encryption method that caused me problem in the past!
Antivirus: Windows Defender Antivirus (built-in) with a 10-plus years of experience on surfing the internet and trying stuff.
Firewall: Windows Defender Firewall (built-in) with additional firewall from my house modem.
Virtualization: Using WSL2 and Windows Sandbox (powered by Windows Hyper-V Hypervisor) which creates a fresh image of Windows 10 on demand and destroy is as soon as I close the sandbox. If I need to test something on a specific OS I usually use VirtualBox from Oracle.
HIPS: TPM hardware protection from my PC manufactur.
Encryption: None because Windows 10 Home doesn't have BitLocker and moreover it caused me issue in the past, all the sensible data are stored on an external portable hard-disk. 

My desktop PC (old one just using it when I don't have my laptop)
OS: Windows 10 Home 20H2 (2009 version)  64 Bit ULTRA-LIGHT edition due to performance issue
Antivirus: Windows Defender Antivirus (built-in) with a 10-plus years of experience on surfing the internet and trying stuff (Same as before because I am the same guy D: ).
Firewall: Windows Defender Firewall (built-in) with additional firewall from my house modem.
Virtualization: None due to performance and old hardware issue
HIPS: Nothing, too old to have a TPM.
Encryption: None because I don't use it for critical stuff, it just runs games or play videos or open PDF of lessons.

My "torrent-box" PC
OS: Linux Lite 5.2
Antivirus: None
Firewall: UFW firewall with a 10-plus years of experience on surfing the internet and trying stuff (Same as before because I am the same guy D: ).
Virtualization: None
HIPS: Nothing, too old to have a TPM.
Encryption: None

So this is my configuration