All the metals in the market are like this, and the metal bottom of the shell is plastic. Generally, notebooks with metal shells are mostly commercial and not suitable for playing games. Yours is ok, and its positioning is audio-visual entertainment. There is no problem playing big games.

You can also consider HP's 442 1 series, and the metal shell is positioned for commercial use, but the graphics card is a mid-range graphics card, so it is no problem to play games.