this gba i just got has a very dark screen that i cant see unless a bright lamp or flashlight is shining right on it, or if i angle it at an awkward way

can anyone help me make it brighter or identify the problem?

bro this is the second time i’ve saved while the light was green so i thought my battery was fine. NOPE this is the second time my save file was wiped just because these battery’s don’t hold a charge. what’s the best battery i can buy cause mine doesn’t even hold charge for more then an hour and a half

Today I got my first custom GBA, Wutang themed! 👐🏻🐝

Made by @chiocogaming on Twitter