MacBook Pro (2017) screen goes black when I open it

when first opening my laptop, the screen looks normal, but gets progressively dimmer the more I open it, then goes completely black once it reaches about a 90 degree angle. The keyboard stays lit. I’ve found that opening my laptop slowly sometimes works, but if I accidentally bump it open more, it goes black, and if I’m playing a video, the sound stays playing. The only way I’ve been able to resolve this is by shutting the laptop completely and reopening it slowly. Is there any way I can fix this? Is it a mechanical problem? Or do I need to get a new laptop :(