breaking out from a for loop statement

I have a small issue as I’m not that good with coding, I have a code that it’s working for me good but I want to improve it. i want that my code when it will not find any data to just get out of the loop for and show this message “AUCUNE DEMANDE A VALIDER”.
thanks in advance

for (i = 1; i < dataValues.length; i++) {
    if (dataValues[i][11] === 'COMMANDE CONFIRMER' && dataValues[i][12] != '' && dataValues[i][13] === '') {
        pasteSheet.appendRow([dataValues[i][0],
            dataValues[i][1],
            dataValues[i][2],
            dataValues[i][3],
            dataValues[i][4],
            dataValues[i][5],
            dataValues[i][6],
            dataValues[i][7],
            dataValues[i][8],
            dataValues[i][9],
            dataValues[i][10],
            dataValues[i][11]]);
      
        var clearRow = i + 2;
        copySheet.getRange('A' + clearRow + ':M' + clearRow).clear();
    }
}

// get destination range
var destination = pasteSheet.getRange(pasteSheet.getLastRow() + 1, 1, max, 1);

// clear source values
Browser.msgBox('Commande Confirmer');
}