Computer Systems are not skilled enough to produce real random numbers, they use deterministic algorithms to produce numbers which look random but follows an order which is derived from a seed value.
I've seen that most of the time
new Date()(which is the current datetime) is given as the seed.
These pseudorandom numbers are prone to repeat the same pattern if provided with the same seed value.
Rule30 is a similar deterministic pseudorandom number generator algorithm used for a long time by Stephen Wolfram.
The most basic Rule30 pseudo randomness algorithm visualized using GoLang
