Redmi phone wallpaper problem

Hi everyone, my name is Booker and I use to live in Australia. Firstly tell me how you all are and your family by commenting on this post. So the problem today which I am going to share is that currently I am using Redmi mobile which is an international brand and it is truly effective coastwise. I am using this mobile by the last 5 months and it is truly performing perfectly. But the problem I have faced is that whenever I am setting any new wallpaper for lock display it is not removing the last wallpaper which I using. It started to show changing wallpaper some time the new one and sometimes the older one. I want to set a new wallpaper and only a single wallpaper. That is the problem which I am facing and guys please any Mi. the user here please help me by commenting on this post.

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