Shiurim in this topic
In a general sense, בטחון refers to trust or confidence in something or someone. It can apply to trusting another person, a system, or oneself.
In a deeper context, especially in religious or spiritual discussions, בטחון often refers to trust in Hashem (G-d), a strong belief that everything that happens is ultimately for the good, and that Hashem is guiding events in a positive direction, even when circumstances seem difficult.
It can also be used in the context of בטחון עצמי (self-confidence), meaning trust in one's own abilities.