Ok you seem to be pretty outdated I won't blame you for that so I'll catch you up to speed and when I refer to bitcoin I generally refer to any tier 1 crypto currency:
There is actually a BitcoinToUSDPipeline. The real problem is that the exchange crypto transactions are NON REFUNDABLE as you know, that means once it leaves the banking system (via making victim register a coinbase or kraken account, or register it for them using their credential information and compromised webcam for liveliness checks) you have an unlimited amount of time to do whatever. There are also various real life ways of bitcoin atm, using card to buy <1k giftcards (no kyc).
Okay you have your money in bitcoin, now what? Well, welcome to dex - decentralized exchanges. Using smart contracts you can wrap your btc into eth-btc, using etc-btc you can now trade it to any other crypto currency no strings attached and the most popular currently is tron.
Tron has tons of merchants which will simply swap from a to b from two different liquidity pools and those transactions are done off-chain and exist only on their database, since there are usually dozens of transactions mixed it becomes increasingly difficult to continue your investigation without having to use the slow legal route which is especially difficult if the merchant is offshore often ending up in a dead-end, at that point only INTERPOL really has the power and resources to trace it. Liquidity pools are used for perfectly legal reasons and it is not like tornado cash.
Now you have two choices: just spend the money directly (in Georgia (the country) everyone accepts crypto), buy giftcards or if you don't really care and aren't doing anything interpol would be interested in just deposit to binance and withdraw to your bank account, depending on your local government they might not even care.