These clipboard hijackers are nasty -- you can read about them here: https://www.bleepingcomputer.com/news/security/clipboard-hijacker-malware-monitors-23-million-bitcoin-addresses/

Any time you paste a crypto address, you need to check that the first few and last few characters of the address that you paste matches the address that you copied. 

(Ideally you'd check every last character of the address.  It's theoretically possible, but computationally expensive, for this malware to create a public address ahead of time for each of the addresses that they are watching that matches on the first few and last few characters).

BTW, it really is worth reporting this to the police.  You never know when a criminal will be caught, and they could sitting on a private key that generated the address where your funds are.  It's certainly possible -- though unlikely -- that you could get your money back.  It has happened before (at least in the case of crypto scams -- there are a couple of examples at the end of this article: https://cryptoassetrecovery.com/2021/07/15/best-practices-recover-funds-from-crypto-scams/)