Hope this post can help next person looking for answer who gets phished on stake because stake is too busy to explain all this.
It's good that you want to warn people about such attacks, and hopefully, you've become more cautious moving forward. But, I'm not entirely sure what you expect Stake platform to do in this situation. Phishing attacks are incredibly common, possibly one of the most common online threats. I receive phishing emails almost daily, targeting services I've never even used. Given that Stake is a highly popular online gambling platform, it's only logical that it's a prime target for phishing attacks.
Nevertheless, the primary responsibility for protecting yourself falls on you. You mentioned using 2FA, which is good. However, even with 2FA, you should never enter your login credentials on fake websites. My recommendation is to consider using a password manager; It can greatly reduce the risk of falling victim to such situations in the future.