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It's a very sad incident since your 98.9 Ethereum hacked. But you acted like a fool using Metamax wallet basically you had a lot of funds. And since you had a lot of money, hackers hacked your wallet. If you had used a hardware that was safe for your money, you would not have faced such a loss and hackers would not have been able to hack your money. But instead of doing them, you put your money in a software wallet, because of which hackers hacked and transferred your money very quickly. We know that if cryptocurrency transactions are transferred to a wrong address, it is never possible to get them back and it is never known to which person's wallet they have been transferred. So it will never be possible to fully recover your money that the hacker has hacked, it's really sad for you.
I was really interested to know how did the hacker was able to hack the meta mask wallet? Did the OP share his seed with anyone, or his computer was malware effected?
Funds lost from the crypto wallet are not recoverable, so no matter how much OP offered the bounty, no one can recover his funds. Also, after making this post he never returned on the forum. Sometimes if you face so much loss, you can have heart attack or something like that because of a shock or traumatization? I hope OP is alive