Xiaomi India — My poco X3 front camera is not working

I have got this poco X3 and it's only been 1.5 yrs. My front camera is not totally not working at any app and when I tap at the zoom option it just freeze it's been 2 months. I have gone to service centre but they said they had to change the whole system and they are pricing it quite high.i have never dropped my phone nor have it have scratches.Its been really irritating. Please solve this issue. All the users whose 1 yr warranty has finished they are facing this issue. It will really be helpful i[censored] solve this issue as soon as possible.