what is the best secure wallet can i setup on desktop computer ?
If you're going to hold that much amount of bitcoin, mate just spend the $70 and go buy a cheap Ledger Nano S[1]. It's a small price to pay for your security. This is definitely something you don't want to cheap out on.
[1]
https://shop.ledger.com/products/ledger-nano-sthis ^^
You got cleaned up once, and yet again you're going for a desktop wallet... A decent hardware wallet starts somewhere in the $70 range, maybe $140 if you go for a ledger nano X... That's nothing compared to the loss you suffered today. Learn from your mistakes, don't repeat them.