"Random" is a term that reflects the speaker's level of knowledge and predictive capacity. For example, rolling a die in a vacuum with a robot programmed to always roll a six would not be considered random, as the outcome can be predicted by the operator. The same can be said for a "random number generator," which is only considered random if the observer does not know the equation and input values used to generate the number.
The term "random" can be misleading, as it's often used to imply a lack of value or meaning in something that is perceived as unpredictable to the speaker. However, recognizing something as "random" should actually be seen as an opportunity to delve deeper and uncover unknown factors and understandings, rather than as a negative because it's currently too complex or has too many unknown factors.
In order to ease the discomfort of the unknown, people often attribute an agency or intention behind a certain outcome, rather than acknowledging the potential multitude of natural factors that may have contributed to it. This is because it is easier to explain something with an intentional cause rather than exploring the complex natural factors that may have led to it. Understanding these factors could ultimately lead to being able to predict the outcome and no longer consider it random.