Inspect the BAR > Flexbox settings. Set it like this:
Inspect the middle container with LOGO. Go to MARGIN. Set right and left margin as needed:
To add space between elements, inspect the element, add right or left margin as needed.
On the thir Container, you have 3 elements, navigation inline, navigation layered(mobile menu), then content area with language switcher. Drag the Navigation Layered to the bottom of content area element and it will appear on the right/end of the container.
Add a button element in between navigation inline and content area. There's an option to add an ICON and disable text on the settings of the button element.
Hope this helps.