There's a big chance that you mistakenly publish your privkey to someone else, maybe you got phishied, or just signing up to a fishy site. That's why you need to atleast have some sort of paid internet scanner.
and at this point, there's nothing you can do
Your BTC was sent to 1NBK7YkQRM39h2Qx3KR6Cd8vUmC1ztZ37c which had 0.19653048 BTC.You can chase it from there.
It's not a good idea to blame Electron, or Skype. If anything, blame Internet Explorer, Windows and poor internet sanitation.
Chasing stolen BTC can be a thing, but if the thief exchanging it to random exchangers that don't need KYC, it's useless.