The brightness of the screen is low and don't change

Well that. Not just from the buttons of the laptop, also going to configuration nothing change… And is setting minimum.

Graphics:  Device-1: Intel HD Graphics 620 vendor: Hewlett-Packard driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:5916 
           Device-2: Chicony HP Wide Vision FHD Camera type: USB driver: uvcvideo bus-ID: 1-4:3 chip-ID: 04f2:b593 
           Display: wayland server: 1.20.10 compositor: gnome-shell driver: loaded: i915 
           note: n/a (using device driver) - try sudo/root resolution: <missing: xdpyinfo> 
           OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.3.4 direct render: Yes

Somebody give me the answer here… but estrange i cant find the answer. But works. i have to do some change on boot adding some lines there.
Thanks. And sorry cant put the solution here.