AC adapter replacement for laptop


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Hello, I have a gigabyte G5 laptop. Specs as follows

10gen i5
rtx 3060
16Gb ram
500Gb SSD

I bought the system used, and not sure if it's using the original power adapter. It is rated at 180W which is correct for this model. It is made by Lite-on.
The problem I am having is, it is EXTREMELY hot to touch. Literally can't touch it, or I'll burn my fingers. That hot.
I want to buy a replacement for it. I'm in Japan if that matters.

What am I looking for in a replacement? Any input would help. What do I google for to find one that'll work?