MacBook Pro screen goes black, any solution?

A few weeks ago I got my Macbook Pro then it had some issue with the screen flickering and goes black so I sent it back for repair now it’s back from repair and I’m checking out if it’s all good but apparently not because now the screen just randomly decides to go black at a random time. I try to move the mouse around click some keys but nothing happens, it’s like the screen is turned off, the Apple light on the screen’s back is turned off but the Macbook Pro keyboard’s light is still on thus it’s actually still on.

Now what is the problem here? How can I fix it? Do I have to send it back to the Apple Repair center or what?