Why is my Casio CTK-2550 keyboard not turning on?

Around 12/21/20 was the last time my keyboard was functioning properly.

I don’t recall the last time I tried using it again, but whenever I did, I used the same outlet for my adapter, but for some reason, it wouldn’t power on

and I was confused why because

1. it doesn’t run on batteries

2. the outlet I was using for my adapter on 12/21/20 was perfectly fine (I know it was working cause it charged my phone and laptop)

3. the wire didn’t seem to be torn or damaged

I'm not sure if this has happened to anyone else but apparently, I’ve tried searching up the problem and there have been no results for me, at least for my specific brand.

I’d really appreciate it if someone sees this by chance because I’d really like to use my keyboard again so I can learn a song I like.

(Also, very random note, I cannot do such things that involve tools otherwise I’d get in trouble with my parents)