Phone not switching on!

Hi,

I've had this Moto G3 for a while now and a few months back I really wanted the android pie.

So I unlocked the bootloader and downloaded the pixy os . I tried taking root but it seemed impossible and so I took a different approach which was to erase everything including the software and then flash the pixy os and for some reason that worked and I got android pie .

Everything went really well for a week after which my phone stopped charging slowly and the battery drained fast. Then I replaced the battery and the charging port after which my phone was good as new (with android pie) . But a week later I had the same problem again.

I some how charged the phone to 35percent last week and tried switching it on . But in my every attempt it would go to recovery mode !!

What should I do??