Blacklist not work

pi@raspberrypi:~ $ cat /etc/pihole/blacklist.txt
www.google.com
google.com
malwarebytes.com
www.malwarebytes.com
www.store.steampowered.com
store.steampowered.com


I'm still able to enter those sites. I also may be understanding regex wrong here. If I add "^something" as regex it should block any domain starting with something? Or "com&" and it should block any domain ending in com right?