How to go down one cell after finding the last filled one?

Question

Google Apps Script

I can’t figure out how to add here to go down one cell below the one found ???

function posledyaheika() {
    var spreadsheet = SpreadsheetApp.getActive();
    spreadsheet.getRange('C1').activate();
    spreadsheet.getCurrentCell().getNextDataCell(SpreadsheetApp.Direction.DOWN).activate();
};

Answer 1

Try offset

...
spreadsheet.getCurrentCell().offset(1, 0).activate();