Why Does my Gen 2 Apple Pencil’s pressure sensitivity not work?

Hi, so I got my IPad along with a gen 2 Apple Pencil a year ago. At first the apple pencil’s pressure sensitivity works well whenever I draw or write. However, after a few days, the pressure stopped working and the line felt very stiff no matter how hard or light I press onto my IPad screen. There’s just no flow in the lines I make using this apple pencil. I have tried replacing the nib with a new one, restarting my IPad, disconnecting my pencil, and there’s no problem with my IPad. Then I tried with different drawing applications like ClipStudioPaint, Ibispaint X and Medibang Paint, the apps works just fine so there’s something wrong with my Apple Pencil. I also always keep my Apple Pencil battery on full battery before using it to draw.

Please help me ! I have been struggling with this issue for a very long and it’s getting very difficult to produce some drawings. Thank you.