All the tabs you have open will appear in a grid formation.
You can also swipe left and right on the address bar to switch between your open tabs.
If you have multiple tabs open that aren’t associated with a group already, you can tap ⋮ > Group tabs and then select which tabs to assign to a group.
From the tab grid view, you can close all the open tabs by clicking ⋮ > Close all tabs. [1] X Research source
From the tab grid view, you can close all the open tabs by clicking ⋮ > Close all tabs. [1] X Research source