What do you think about coincidence?

There is astonishing orderliness in existence, simultaneously, there is perplexing chaos and randomness… The universe seems at times an impeccably organized, immutable, perfectly “conceived” machine, and at times entirely out of control…

Is coincidence random with no meaning? Or is it determined and meant to happen, and does it have meaning? Do things just happen? Or, is there usually a reason behind it because things don't just happen?