Bad faith is when someone is not being honest or truthful. Imagine you have a friend who tells you they will bring you your favorite candy, but they don't really plan on doing it. This is bad faith because they tricked you into thinking they would do something nice for you, but they never intended to follow through with their promise.
In more serious situations, bad faith could mean that someone is intentionally trying to deceive or harm another person or group. For example, if a company promises to deliver a certain product at a certain time, but they know that they cannot meet that deadline and have no intention of trying to do so, that would be bad faith.
Bad faith is not a good thing, and it can cause problems in relationships and organizations. It is important to always be honest and truthful so that people can trust us and build strong connections with us.