Having Trouble With En Passant

I am a beginner and I am playing against the bots.  En passant is confusing me.  I thought there were rules for en passant pawn movement..  I am playing white.  I send a queen to take a pawn that has not moved.  The neighboring pawn, that has also not moved, then takes my queen  en passant.  I thought all pawns had to have moved two spaces to take or be taken  en passant.  Something is not clicking with me.  Can anyone help me?  Thank you so much.

Close En passant capture can only be done with one of your pawns immediately after a neighboring pawn from the opponent advances 2 squares in such a way that if it moved one square, your pawn could capture it. It is like a normal pawn capture "intercepting" the enemy pawn on the first square before it gets a chance to advance to the second.

https://www.chess.com/learn-how-to-play-chess 

En passant is under the 3rd section "Special Rules" in this chess.com hyperlink to the rules.

Please show us the game. What you describe did not happen. It cannot on this site, nor on any other chess site that implements the rules (i.e. all of them).

Thank you so much.  I have to process this and practice.  Ok, that makes sense.  Black's first move was to advance King's or Queen's pawn two spaces; I forget which one.  I will take a look at your video.

A pawn captures diagonally. That part never changes. En passant is a rule for a very specific circumstance, it's not the normal everyday move. If a pawn captures your queen it is simply because your queen was on a square it can attack. It doesn't matter if they leave it there for 5 moves in a row and then decide to take, that's still okay.

En passant only applies to a pawn taking another pawn and only applies for the one move after a pawn moves forward two squares on its first move.

Thank you so much.