bitcoinpaperwallet.com scam lost 14.5 BTC
I am really sorry for your loss, unfortunately, there is no way to get those Bitcoins again.
I have seen other people who got scammed by this website like this one: https://www.reddit.com/r/CryptoCurrency/comments/cyd6uj/bitcoinpaperwalletcom_scam_or_not_4_btc_stolen/
The best way to make the private key offline is using trustworthy software and when the computer will never connect to the internet again, otherwise, it will be possible to send the private key created to someone else when the computer is online again.