This doesn't look promising but I would like to encourage if anyone knows any additional information, please share.
I found a note in my notebook that I send 5,644BTC to liqui exchange back in beginning of 2017
That very sad bro. Back then that was about $5,600 and today It's worth about $200K

I don't know if it's just me, but I wouldn't leave even $1,000 worth of Bitcoin in an exchange if I was going to be off for a long time. Centralized Exchanges are custodial services, and we should never use them as wallets. Once they are hacked or go offline, that's the end of the road for your funds.