If you have ever closed a Tab (or Tabs) by mistake in Chrome it can be very frustrating. Fortunately there are two ways to get those closed Tabs back.
The first way is to right click on the + (or new Tab button) and select to reopen closed tab. The other option is Ctrl+ Shift+ T.
One other way is to go into your history by selecting the three dots in the upper right and choosing history - or Control + H.
Embedded below is a 24 second YouTube tutorial.