No need to apologize, questions are how you learn!
Electrons actually exist in more of a cloud (that is, a field that tends to bend and compress but generally stays a sphere-ish shape) around the nucleus.
The reason they are portrayed that way on paper is just because it’s much easier to visualize and work with :3
The electrons move because of the forces between the negative charge of the election and the positive/neutral charge of the nucleus.
If electrons didn’t move, then that means they wouldn’t have any charge (or it is being disrupted in some way), which means that atoms and molecules wouldn’t stay apart/stick together correctly… which means life as we know it would not exist!
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