Root Cause

The events defined in the contract do not use indexed parameters:

Impact

Without indexed fields, it is difficult for off-chain services and users to filter and search for specific events in the transaction logs. This reduces the usability of the events for monitoring and analytics.

Recommendations

• Add indexed Parameters: Mark frequently queried parameters as indexed:

  event PlayerLostTheGame(address indexed player, string message, uint256 cardsTotal);

  event PlayerWonTheGame(address indexed player, string message, uint256 cardsTotal);

  event FeeWithdrawn(address indexed owner, uint256 amount);

• Limit to Three Indexed Fields: Remember that up to three parameters can be indexed per event.