Maybe it’s too much to say people who experienced this stuff are delusional? I know a lot of them personally and they live a normal life, but they keep saying testimonies about holy experience, that God talks to them etc.
The appropriate explanation is that those things don’t exist, either.
The word you’re looking for is “coincidence.” Humans are literally pattern recognition machines; we’ll see patterns in random noise if we look long enough. People finding meaning in patterns they see and can’t explain is pretty natural. It becomes problematic, though, when we do have explanations for things and those explanations are ignored.
Santa did it with the help of the loch ness monster, and Elvis.
What miracles? What supernatural?
These are all things we don’t understand. They literally mean we don’t know how or why things happened the way they did. You can’t use “I don’t know” to claim you therefore know the answer.
When someone claims a god is responsible, the only appropriate response is “how do you know that?” When the answer comes back “what else could it be?” I respond with “literally anything else.” They must still meet their burden of proof before they can claim victory for their answer.