If it looks like your panels are missing, they’re usually just hidden.
On the left side of the platform, check the side toolbar and click the Markets or Trades icons to bring those panels back.
If you’re using keyboard shortcuts, you can also toggle them on and off with M (Markets) and T (Trades).
If you’re not seeing the order panel with buy and sell buttons, it may be hidden as well. Press O to show/hide the floating order panel, or re-enable it from the side toolbar and then drag it anywhere on the chart.
If your drawing tools aren’t showing, they’re likely just hidden. You can bring them back by toggling the Drawing Tools panel. The toggle is next to the bar with the timezone clock and the timeframe selector, and it’s the small arrow button (>) there.
Once the panels are back, you can hide the ones you don’t need to keep a full chart view.