Phone rapidly discharged. Why it isnt charging anymore or turning On?

My phone rapidly discharged. It is neither charging nor powering On. Tried resetting by holding Power switch + Vol Up + Vol Down many times leading to multiple restarts. But still the phone didnt power up. Replaced the battery and it isnt still charging nor powering up. RED LED is continuously flashing when power cable is connected. During hard reset trial after battery replacement with power cable on, red LED is flashing 5 times, battery charging display appears and a faint orange LED light comes on once, then the display goes off with lights off and the process repeats from red LED again. Phone powered on for more than an hour has not helped too. I feel it aint charging as the red LED gets steady during charging,

Kindly let me know if any hardware requires to be replaced. If not atleast help me out to recover the data from the internal storage. TIA