iPhone 6 stuck in boot loop when wall charging

Hello guys , i have an iPhone 6 and im having this problem where my iPhone will be stuck on boot loop at the apple logo when wall charging only, i always charged my phone through my iMac, this one day i tried charging my iphone through my iMac like i always did and it only showed the lock screen once then it turned off i tried everything though the computer recognizes the phone when i put it on DFU mode but its black screen always even when not putting it on DFU mode the phone boots up only when connected to a wall charger and it gets stuck on boot loop i can get it to recovery mode but its useless if not connected to my iMac, hopefully this wasn’t too long for you to read, thank you very much.