What does this mean on my iphone? - 3

Ok so my Iphone 5c is a POS and it won't charge for ****, jumps percentage levels, drops percentage levels, keeps disconnecting when charging thus me having to keep it at a certain angle lol need a new phone as soon as possible!

For the time being though i'm still using it and just like an hour ago my phone died when i was using it and whenever i plug it in it shows the battery symbol with the little red line and it keeps like blinking/ turning off and on. Like not the apple symbol but the battery symbol then off then on like.

What is that telling me? Is it trying to charge? Or is this the end? When i unplug it though my phone just goes off like it'll turn on if i press the power button but when i connect the cord it just flickers on and off showing me the charging symbol with the red line.

Added (1). Had this phone for like 3 years and already had like over 100 chargers cause my phone is a POS literally lol.

Lol I have an iPhone 5 and its sh*t so u either might want to try a new charger or get a new phone. Sorry.

It's trying to get enough charge to turn on again. Also are you sure it isn't the charger? When the charger has worn out that happens try a new charger before anything.