Unverified streams (free websites) often lag 30-60 seconds behind live action, crash during peak viewing times, and are frequently shut down by authorities.
If you live in Greece or have a Greek address, the official Cosmote TV package is the gold standard. You can subscribe to their sports bundle, which includes Cosmote Sport 1-9 HD. Use their on your phone, tablet, or smart TV. cosmote sport 1 live verified