Windows 10: i cant change my lockscreen wallpaper

When i tried to change into other wallpaper it just shows grey screen loading, it could stay like that for a long time even hours, my wallpaper is just stuck like that for 2 years and i cant change it anymore. The device is windows 11. I already tried updating and restart device.

:)

 

Lockscreen Wallpaper

I am unable to change the lock-screen wallpaper. Whenever I select a picture to set as lockscreen, a message pops up saying"try a different photo". If I try to change it from the personalize window, the picture keeps buffering and there is no actual change.

 

Lockscreen wallpaper changes automatically

I use windows 10 home. I have my lockscreen wallpaper set to picture mode and i have no clue how this keeps changing to some other random picture which i never had on my device before. it keeps happening with two pictures only, i have not seen it change
to any other than these two .

This is so frustrating. Help please!

 

Bing Lockscreen Wallpaper does not update

My Bing Lockscreen Wallpaper is working now, but with a little bit different compare to bing search background

- my bing search background changes from 4PM everyday

- my bing lockscreen wallpaper changes from the next morning, maybe in the previous night because when I wake up (6AM), it's changed.

I'm in Vietnam (UTC +7)