It's strange as Ledger wallet should be safe, where did you bought it?
The OP never got his Bitcoin into the Ledger. He had just bought a Ledger but hadn't funded it yet.
95 bitcoin equivalent $45,000. this is huge with me, hope you will soon get back your money
Try that math again. 95 Bitcoin is equivalent to $450,000.
Could the OP, or someone knowledgeable on this type of situation, speculate on the ACTUAL mechanism of this attack? What did the OP actually do, that gave away his private key? Was it stolen from the computer's clip board (copy/paste?)
It is impossible to know since the OP does not give too much information.
The OP has to have an idea where his behavior went reckless, as far as the security and safety of his bitcoin is concerned.
What questionable link did you click on? What "BITCOIN LIVES HERE" sign were you waving from your PC?
How did you become the target?