this is what i did id my set up wrong? or is the code wrong?

Program a system with three lights. The user presses start and the first light comes on and stays on$,$ ten seconds later the second light comes on and stays on$,$ ten seconds later the third light comes on and stays on$.$ After $10$ more seconds with all lights on$,$ everything shuts off. If the user presses stop at any time, everything shuts off.

const int buttonPin $=2$; $//$ Push button pin

const int led$1=8$; $//$ LED$1$ pin

const int led$2=9$; $//$ LED$2$ pin

const int led$3=10$; $//$ LED$3$ pin

bool isRunning $=$ false; $//$ To track if the sequence is active

bool buttonPressed $=$ false; $//$ To check if the button was pressed

void setup$()\{$

pinMode$($buttonPin$,$ INPUT$)$;

pinMode$($led$1,$ OUTPUT$)$;

pinMode$($led$2,$ OUTPUT$)$;

pinMode$($led$3,$ OUTPUT$)$;

$\}$

void loop$()\{$

if $($digitalRead$($buttonPin$)==$ HIGH && $!$buttonPressed$)\{$

buttonPressed $=$ true;

isRunning $=!$isRunning; $//$ Toggle isRunning on each button press

if $($isRunning$)\{$

startSequence$()$;

$\}$ else $\{$

stopSequence$()$;

$\}$

$\}$

$//$ Reset buttonPressed when button is released

if $($digitalRead$($buttonPin$)==$ LOW$)\{$

buttonPressed $=$ false;

$\}$

$\}$

void startSequence$()\{$

digitalWrite$($led$1,$ HIGH$)$;

delay$(10000)$; $//$ Wait for $10$ seconds

if $(!$isRunning$)$ return; $//$ Check if we should stop

digitalWrite$($led$2,$ HIGH$)$;

delay$(10000)$; $//$ Wait for $10$ seconds

if $(!$isRunning$)$ return; $//$ Check if we should stop

digitalWrite$($led$3,$ HIGH$)$;

delay$(10000)$; $//$ Wait for $10$ seconds

if $(!$isRunning$)$ return; $//$ Check if we should stop

delay$(10000)$; $//$ Keep all LEDs on for $10$ seconds

stopSequence$()$; $//$ Turn off all LEDs after the full sequence

$\}$

void stopSequence$()\{$

digitalWrite$($led$1,$ LOW$)$;

digitalWrite$($led$2,$ LOW$)$;

digitalWrite$($led$3,$ LOW$)$;

isRunning $=$ false; $//$ Reset running state

$\}$