Garacks

Hello everyone, kinda new in this, does anyone know what is this and how should I treat it ? It’s like spider web with little bug on it !

I will put more picture in the comment section !

Thx in advance !

When I watch some video with my docked steam deck on a screen, every 10 seconde, there is a glitch on the screen, is there a way to fix this ?

So I’m trying to find a dock for my steam deck, anyone have recommendation ?