First, a quick refresher: is a proprietary, paid software application used for designing and controlling laser cutters and engravers. It is widely considered the industry standard for hobbyist and professional CO2, diode, and fiber lasers. A valid license costs between $60 (one-year) and $120 (lifetime).
If you are looking for a way to use LightBurn without an immediate commitment, the developers provide legitimate, safe options: LightBurn-Loader.zip