How do u come back After losing everything?

First off, don't tell people your army

Next, Just do what you did at the start of the game (but now you have knowledge of how to play, and what to do)

Build a small farming army, farm, get some defenses in base, then start trying to set out to take a city/take yours back. Now after thats done you should have defense, small army, and resources coming in. Mainly after that you just keep farming/ building your army.

Look at it as this: PRESTIGE!!

he needs a way to build a small army first, lolz. I told him how though.

How do u come back after losing everything? I lost All of my forts, All of my oasises and then starved out. Army killed and Then a city is gone.

How would u come back from something like that? Right now I have no idea what to build up first...

capture an inactive city and wait. patience is a key virtue
you will also need infantry to farm nearby inactive cities for resources then it is mainly up to u