Galaxy A34 text smearing with low brightness on dark background

[cool2]

When I turn the brightness to the lowest setting, I can see things such as text smearing and turning purple leaving a tail when on a dark background. For example YouTube in dark mode, the white title text smears when scrolling leaving a purple trail. Turning the extra dim mode makes it even worse. The smearing completely disappears when setting the screen brightness higher to about around like 15% - 20% and above. Is this a faulty screen or is that normal? Here's a video showing the issue, look closer at the appearance text and the text at the top, it turns purple-ish when moving. Thanks.

https://imgur.com/iwXAwDz