Built-In 'Back' Button For App

I am creating a news app (as already mentioned somewhere in the community), There are tons of screens which are there, and I can’t devote half my time to just creating a ‘Back’ Button, putting the required script for it on each screen. Isn’t there any built-in ‘Back’ button in Thunkable, which takes you to the homepage of the app?
Please reply.

Consider the stack navigator