Thanks for the deep look, i followed your thoughts and i think that you are right and that the wallet is somehow related to Bittrex's hot wallet..
How to check even further if it is really the right answer? is it an old wallet or what?
I also think that you should be rewarded the 0.01 Btc, well done mate.
Well it seems that the mentioned
Bech32 address is still active.
Same for the
hot wallet.
Can't really trace where OP's BTC exactly have been sent to, as those are mixed over and over again. That's how exchanges work, unfortunately.
All in all it doesn't really matter in which address the BTC are stored, as long as the address belongs to Bittrex, OP will probably be able to recover the coins (provided he used Bittrex in the past).