I took a look at your pictures to try to figure out what is going on. I think you are not really adhering to the guidelines on what pictures to post.
I see that you have posted the same photos several times. And you have posted many very similar photos. Also you have photos where people are easy to identify. Those are some of the rules you need to fix your photos to meet. In the link above there are links to further info on photos. It is not super easy to clean up your photos, but it will increase your trust score. Feel free to take a look at my or others’ pictures also to see how others select pictures to upload.
There might be other reasons why your pictures are removed (made private) by Google and other reasons your points go down. This link might help you on that.
thanks a lot for your reply, i think the reason for the loss was that i have enabled clean up activity on google after three months in my timeline, and not the pictures
The advice from @MortenCopenhagen is quite appropriate. The idea of adding photos to the map is to show more about the place. That means taking pictures of the place, and taking pictures that are different from your other photos.
If your photos have been removed from Maps then you should not be trying to recover those; but rather you should concentrate on making new contributions. I would also suggest you remove the near duplicates you currently have along with picture taken from a place that are not of that place.
Please note that your Timeline history is different from Web & App activity. If you have already paused Web & App activity, you are not asked to answer questions on Google Maps.
If you clear your entire Web & App activity, you will lose all answers. None of these interact with Timeline history. If it’s off, you won’t get prompted as often for questions, but if you review or save a place, you will be asked questions and can answer them, later managing that activity in My Activity.
You must enable general activity inMy Activity to answer questions about places on Google Maps. Any answers submitted when this setting was disabled may be removed, and as a result, your Local Guides points will be removed for those contributions.
As said above if the general activity in “My activity” is disabled, the points earned for the removed answers will be removed too.
Just as a reminder, don’t forget when responding to others make sure to tag them (by writing @ before their names) in a post so they can receive notifications that you are communicating with them.