You checked the beginning and end of the address—so how did you still end up sending funds to a scammer?
Some token contracts allow transfers of zero tokens. Attackers can exploit this to create a record that appears to show tokens being sent from your address, making it look as if you made the transfer yourself.
Ignore unsolicited zero-value transfers, and never save the sender’s address as a frequently used address.
Addresses that frequently send and receive stablecoins and $ETH are more likely to be targeted by address poisoning.
If anything is unclear, leave a comment and ask.

#ETH

Stay level-headed. Don’t get carried away.