Why Is my screen flickering

I bought this model off a shopping site (Jumia.com) When it came it was fine until a week or 2 after I noticed whenever I pivot the screen, Bend it forwardor backwards it flickers, sometimes glitches and the other times goes completely black I'd have to press the touch pad sides, tap the screen or alternate the refresh rate to get it working again.

In other cases I'll have to use win cntrl B, I called lenovo support to see if they could hlep and they said there's no warranty for a new device I just got that I should contact my provider, or go to a lenovo outlet near me and Unfortunately for me I stay in Nigeria, there's inaccesaibilty to such stores logistcally.

I haven't seen any