I need help to make a counter with arduino 7 segments display and a pushbutton

I’m new to Arduino and I’m trying to make a counter that by pressing the pushbutton mark on the display 00 , 01 , …
each click will increase 1 , I came up here with a library named sevenseg ,
need help!!!

#include <SevenSeg.h>

SevenSeg disp (6,11,7,8,10,5,4);
int i=0,estado_botao=0;
const int numOfDigits=2;
int digitPins[numOfDigits]={9,2};
#define push 3
#define pressionado 1
#define n_pressionado 0
void setup() {
pinMode(push,INPUT);
disp.setDigitPins(numOfDigits,digitPins);

disp.setTimer(2);
disp.startTimer();

}

void loop() {
for(int i=1;i<=99;i++){
disp.write(i);
delay(1000);
}
}
ISR(TIMER2_COMPA_vect){
disp.interruptAction();
}