2016 Macbook pro screen flickering

This is a connecter based error and happens all of the time. You don’t need a new screen, you need a new screen connector which significantly makes one of these repairs cheaper. And this happens from opening and closing the lid

Press command-shift-4 and drag over an area where these glitches show. Do they appear in the screenshot or not?

I am guessing that the screenshot will not show these issues, which would suggest it is indeed a problem with the cable connecting the motherboard to the display. It is an easy fix for an Apple service provider, if they are allowed to do it... as the machine is nearly 7 years old, I'd take in sooner, rather than later. You don't want the machine added to the "obsolete" list, and then the service providers will not get the parts for it.

Another easy test, which can also be used as a workaround, is to attach an external display. In all likelihood, the external display will work perfectly - all but confirming the diagnostic suggested above.

rick1205 wrote:

I can confirm that when I connect it to an external monitor the flickering doesn’t come over. Also it start running a lot hotter then normal on boot up

This is what I expected, and is consistent with the notion that the issue is with the cable connecting the motherboard to the internal display.

(The being hotter part is just due to the fact that your GPU is working double-duty to generate output to two displays)