Chosen Solution
so my iPad is dead, and I charge it. every single time when it hits 1% it start the ipad. and then it just turns off because the battery ran out. and then when it charge to 1% it just goes in a loop
It might be simply the battery worn out and doesn’t take charge anymore. Make also sure you’re using the right charger, a 1A charger as that for the iPhone wouldn’t be enough to charge an iPad flat battery. Both possibilties would produce the symptoms you’re describing.
Try powering it off quickly when it turns on, and wait a little while before finally turning it back on. Your iPad should now have more charge to keep working