someone help me!!!
 

i have a 2012 mazda cx5 petrol. i had issues with car starting then stopping. i have since changed the in tank fuel filter and filter sock (that thing that looks like a tea bag). now the car start button flashes amber. warning light saying key battery was flat so changed it and now its not even turning on. im stuck with what issue could be. im not very rich so i dont have much funds to fix it and we live to far out of town for a mobile mechanic.

I'd get the car battery checked first.