Hi & welcome to OSM!
you used many tags here that are not in use in any other place. Please use only tags that are described in the OSM Wiki or are available in the presets of your editor.
This is necessary to make sure that every other user can understand the data.

During the "learning phase" it would be helpful to limit your tags to a smaller area you personally know and not to edit in various points all around the world.

Hi,
could you check the new tags here? Shouldn't it be "construction:railway:etcs" instead of "construction:etcs"?

Please check the history of the objects. Your impression of my edits don't match what I did.

script? automated edit? What do you mean?

The wiki is very clear:
"link to a single Wikipedia article",
"in the primary (local) language"
"a single wikipedia tag is sufficient"

There is only one link here, and there is no need for a language code in the key.

No, there is no duplication done, see
wikipedia=*#Secondary_languages

There is indeed one wrong link added by mistake, I will fix this.

Please read the description of the key. The very first line says "Only provide a link to a single Wikipedia article, which should be to the article in the primary (local) language for the subject"

the value of the wikipedia tag contains the language, it is not repeated in the key.

'year_of_construction' is a common tag. 'contruction_date' (sic!) is not.

Wikipedia manages a full list of all languages of the article. There is no reason to duplicate this list in OSM. The linked article is either in the local majority language or English.

I just fixed a few keys. There should be no conflict that can't be solved automatically by JOSM.

Hi,
what does 'name_twin' mean? This tag isn't used in other places.

It seems something went wrong here, a garden center selling motorcycles?
node/13410695156

Don't be confused by the word "direction" - The key "direction_north" is indeed for the destination listed on the sign! (Don't ask why somebody did invent this key...)

Using these keys has the great advantage that you can still know where the arrows point to. Here's an example on how these tags can be displayed with proper directions:

https://osm.janmichel.eu/destinationsign/example/#node=9100425887

You can even add more information like symbols:
https://osm.janmichel.eu/destinationsign/example/#node=11464794218

Hi,
it looks like you added "STAG_ADMIN:*" and "STAG_BUILT:*" tags to some highways almost two decades ago. Is there any use for these tags nowadays or can they be removed?
e.g.
way/74810763

Hi,
could you check this destination sign?
node/11382471228

"destination backward" doesn't make much sense on a node that is not connected to any way. These are commonly tagged using "direction_north", "direction_south" and similar.

I could fix this sign based on the image, but here the image link doesn't work.

node/11382471226

Could you have a look?

Hi,
you added many tags here that are not used in any other place:
recurrence, procession:type, next_date, frequency, caranaval, type=event

Is there anything on the ground that actually exists and fits to the scope of OSM? Or is there just a group of people walking there every 5 years?

If you can put anything inside, isn't it a regular
amenity=waste_basket
?

Also, please don't add new tags just because of a warning in some editor - there is no requirement to have a recycling:* tag according to the wiki.

Alright, I fixed it just now.