Charging Interruptions and Power On Issues with iPhone 6: Is it a Damaged Charger?

Hello, I have a problem.
I am the owner of the iPhone6.
Always everything with the phone was fine.
Recently I noticed that the charger terribly interrupts but I charge at a certain angle.
Currently, the phone has discharged, it was connected to the above-described charger, but I do not want to turn on.
After connecting the charger to the right angle, the phone shows the red battery. (attachment)
Unfortunately, no attempts to turn on the phone (hard reset) did not bring results. What could be the reason for this situation? Is it possible that the phone will not turn on by a damaged charger?

asiaaa123 wrote:

Is it possible that the phone will not turn on by a damaged charger?

Rather, by a discharged battery

leonov wrote:

asiaaa123 wrote:

Is it possible that the phone will not turn on by a damaged charger?

Rather, by a discharged battery

It's been charging for 1.5 hours now. The result is still the same

And the charger is 100% efficient?

Rather at 100% by the charger, the charger is original?

The original charger should be dismantled and the soldering on the usb socket improved. I see that this is a common accident of these chargers.

leonov wrote:

And the charger is 100% efficient?

No, it's not working. I'm only charging at a certain angle. I am also worried that when I connect the phone to the charger (I connected the phone to the original charger, which was completely broken but somehow I was able to turn on and recharge the phone up to 90%) I do not charge despite the fact that there is a stamp next to the battery. I am worried and I hope this is not a battery issue .....

Added after 1 [minutes]:

Jacol2084 wrote:

Rather at 100% by the charger, the charger is original?

No, it's not original and sometimes I get the error that "the accessory is not supported"

Added after 1 [minutes]:

Adam-T wrote:

The original charger should be dismantled and the soldering on the usb socket improved. I see that this is a common accident of these chargers.

try Thanks It is through the usb socket that I have to strain myself to make the original work

Added after 5 [minutes]:

Adam-T wrote:

The original charger should be dismantled and the soldering on the usb socket improved. I see that this is a common accident of these chargers.

I undressed the charger. One cable is disconnected. How can I fix it? I have soldering guns But I would need some instructions, tips on how to do it

A clear photo please.