You can use PlaceholderAPI to get placeholders from DeluxeCoinflip. You do not need an external PlaceholderAPI expansion to use these.
%coinflip_games_played%
- Total number of games played.
%coinflip_wins%
- Number of games won.
%coinflip_losses%
- Number of games lost.
%coinflip_win_percentage%
- Percentage chance of winning based on previous win to loss ratio.
%coinflip_profit%
- Total profit earned from wins.
%coinflip_profit_formatted%
- Beatified profit earned from wins (e.g. 3,000,000).