Is there any way to fix this?

Hi. I recently bought this stylus (not an apple pencil) from an online shop. Reviews were great, had video advertisements, so I thought it would go smoothly. The thing is, the stylus only works on one side of my iPad (8th generation). I don't think it's really my iPad's screen problem as everything works perfectly with my fingers. Is there any way to fix this? I really need a stylus for my iPad but now it's difficult to just buy one online. Is it my iPad's problem or the stylus's problem?