How to bezerk

sorry, I might be wrong with the spelling but can any one please tell me how to beserk games?

press the icon where a sword sliced a guy in half before a game. You can only berserk in areans

sorry where is that button

Berserk :v

Are you in restrictions tournament like under 2000 or under 1500?

I think it's under your clock's to the right before a game.

I'll try that next tornament thank you

You can berserk only in arena and team battles.
But are u sure u can play with less time and without increment?

Maybe he don't.

P.S. Berserk forbidden in controls like 0+x,

@Satodgwick If you're on laptop , mobile or PC's playing arenas then when the game starts , just on the right side of the clock , there is red half sliced a guy button , click that and you will berserk your game . You can't do this in the middle of the game .
If you're on app ( Lichess Android app ) then click on the more button( ☰ ) and you will find the same.

well but its better to use pc or laptop though.