The mine you clicked is the red mine. That caused the game to end.

The mine marked with a red X indicates you had flagged that as being a mine, but you were incorrect. There was no mine there. That means the 2 you thought was already touching 2 mines was not actually touching 2 mines where you thought it was, it was touching 1 that you correctly flagged, and the mine you exposed that ended the game.

As you play more and more, you'll get more comfortable with flagging mines and learning the patterns. Rarely will you be left to guessing on where a mine is, but it does happen. One thing that would have helped you know the incorrectly flagged mine was wrong was the 1 at the bottom left was already touching a mine that you flagged. If there is a 1 touching a flag that you are absolutely sure is right, then you can safely click on any box touching it directly. Practicing on the smaller boards is the way to go until you're pretty comfortable, and I'm sure there are probably some tutorials out there.

The mine you clicked is the red mine. That caused the game to end.

The mine marked with a red X indicates you had flagged that as being a mine, but you were incorrect. There was no mine there. That means the 2 you thought was already touching 2 mines was not actually touching 2 mines where you thought it was, it was touching 1 that you correctly flagged, and the mine you exposed that ended the game.

As you play more and more, you'll get more comfortable with flagging mines and learning the patterns. It's not often that you will you be left completely to guessing where a mine is, but it does happen (I typically start a game with a few random clicks to hopefully open up the board some). One thing that would have helped you know the incorrectly flagged mine was wrong was the 1 at the bottom left was already touching a mine that you flagged. If there is a 1 touching a flag that you are absolutely sure is right, then you can safely click on any box touching it directly. Practicing on the smaller boards is the way to go until you're pretty comfortable, and I'm sure there are probably some tutorials out there.

The mine you clicked is the red mine. That caused the game to end.

The mine marked with a red X indicates you had flagged that as being a mine, but you were incorrect. There was no mine there. That means the 2 you thought was already touching 2 mines was not actually touching 2 mines where you thought it was, it was touching 1 that you correctly flagged, and the mine you exposed that ended the game.

The mine you clicked is the red mine. That caused the game to end.

The mine marked with a red X indicates you had flagged that as being a mine, but you were incorrect. There was no mine there. That means the 2 you thought was already touching 2 mines was not actually touching 2 mines where you thought it was, it was touching 1 that you correctly flagged, and the mine you exposed that ended the game.

As you play more and more, you'll get more comfortable with flagging mines and learning the patterns. Rarely will you be left to guessing on where a mine is, but it does happen. One thing that would have helped you know the incorrectly flagged mine was wrong was the 1 at the bottom left was already touching a mine that you flagged. If there is a 1 touching a flag that you are absolutely sure is right, then you can safely click on any box touching it directly. Practicing on the smaller boards is the way to go until you're pretty comfortable, and I'm sure there are probably some tutorials out there.