For this specific issue I'm surprised, I have used all kinds of USB PD chargers for my laptops and all of them but one are less than 100W, with no problem at all.
The ones I use most are 20W and 40W, just stuff I ordered from AliExpress (Baseus brand I think).
This laptop uses a weird barrel jack so I have to try to find something USB-C-to-this-specific-barrel-jack. So far I haven't found anything that doesn't require 100w, as everything on the planet is just rebrands from the exact same Chinese factory.
The ones I use most are 20W and 40W, just stuff I ordered from AliExpress (Baseus brand I think).