Chingado comes from the verb chingar, which is a very versatile and often vulgar word in Spanish, especially in Mexico. While it can mean many things, in this context, "le he chingado" is a colloquial and emphatic way of saying "I have worked my butt off" or "I have busted my ass."
Mario Bautista uses it to express the immense effort and hard work he has put in to achieve his success, emphasizing that nothing has been handed to him. It's a raw and authentic expression of dedication and struggle, making it a memorable and culturally rich word to learn.
Mario Bautista's