Ipad Pro 10.5 inches won't turn on

Hi, my iPad pro 10.5 inches, that i bought in 2017 won't turn on. I have tried to force restart it, turn it on, and have left it to charge for quite a while, however, it still won't turn on. Pretty much everything i have found on the internet hasn't worked, and i would like to know if there are any solutions left for me to try. The problem started around January, where my iPad would often reboot randomly. However, during the same month, i went on a one week trip to the USA. During this trip, no problems were observed. However, once i came back to Dubai, the problems would start again. My iPad does not turn on for days, and randomly turns off. I have speculated a link between this problem and storage, however no one seems to have the same problem as me. I have a 256 GB capacity, and i have only used around 50 GB of it. I know other people who have used a more significant amount of their storage, however, they have no problem with their device.

Another speculation on my part would be the change in voltage output, as the output emitted from emirati sockets averages between 220-240 V, while the american sockets' output averages between 100-120 V. I have very little knowledge regarding electricity, and this whole theory might completely be bonkers. My iPad's battery life being in a bad condition could also be a plausible theory, as it won't turn on, even while charging, but it is only my second year using it.

Nonetheless, I would like to receive advice from people who have dealt with this problem, or those who are currently dealing with it. thanks.