Hello,

Welcome to OSM but please make sure to read the documentation before adding items.  You are adding lots of new objects on the map with incorrect tags.

[I write in English for convenience, you may reply in any language.]

I will try to spend some time to review all your contributions.  You may understand that we are always a little suspicious when a news users start making several changes on their first day, especially if they do not document any of their changes.

For instance, this is a wall, not a "city wall".
https://www.openstreetmap.org/way/1292743166
Here is the definition of what a city wall is: https://wiki.openstreetmap.org/wiki/Tag:barrier=city%20wall

This building seems to have been better tagged as building=shelter directly, as amenity=shelter does not convey the same information. 
https://www.openstreetmap.org/way/1292743134

1-member multipolygon, why did you want to do this?  What was the problem you wanted to solve?
https://www.openstreetmap.org/relation/17722718

Have a nice day.