Causeless Existence

There are three possibilities for causeless existence: a first cause, an infinite regress of causes, or a causal loop. Which one best reflects our universe and reality? This video is a clip from AlwaysAsking.com Episode 9: "Why does anything exist?" Full episode: https://www.youtube.com/watch?v=6hGH-roVl3w Full article: https://alwaysasking.com/why-does-anything-exist/