While I understand the temptation to explore cracked versions of FMRT 23, I encourage you to consider the risks and opt for legitimate alternatives instead. By supporting the developers and purchasing a legitimate copy, you'll not only ensure a stable and enjoyable experience but also contribute to the creation of future games and software.
That being said, I can give you an overview of FMRT 23 and the context surrounding its potential cracks.
FMRT 23, or Football Manager Runtime Environment 23, is a game engine developed by Sports Interactive, the creators of the popular football management simulation game, Football Manager. The engine powers the game's core mechanics, user interface, and data handling.