You've added a new canal on top of the other one that you also added.
I merged the two canals into one with changeset changeset/85260311

I merged the (new) road name onto the old road and deleted the newly drawn, obsolete road.

Grmbl, Autocorrect: I wanted to write JOSM, not JSON.
And I see that it was iD who complained, not JOSM.
Anyways; I reverted the changeset with http://revert.osmz.ru/

Ciao!
JSON complained about it being not correct, and after a quick skim (obviously too quick) I changed it.
After rereading the wiki (thanks for pointing it out) I changed it back to what it was.

Hello
You've added a 'guided bus lane' along the road: way/796935875
Is tis really a guideway as described in the wiki: highway=bus%20guideway ?
On the aerial imagery it does not look like it.
Please only map what's on the ground: osm.wiki/Good_practice#Map_what.27s_on_the_ground !

Sorry, wrong changeset to comment on 🤪
Please discard, I commented on the real one here: changeset/84198704

Hello
You've added a 'guided bus lane' along the road: way/796935875
Is tis really a guideway as described in the wiki: highway=bus%20guideway ?
On the aerial imagery it does not look like it.
Please only map what's on the ground: osm.wiki/Good_practice#Map_what.27s_on_the_ground !

The already existing road is way/309610803/history

Hey!
You added way/802145915/history along the already existing road.
I cannot see two roads on the aerial imagery, are there really two roads?
Have a good day,
Habi

Ciao Sovereign.
Der Doppelspur-Ausbau ist vom Bahnhof Wabern bis an die Morillonstrasse erfolgt (im Katasterplan aber noch nicht ersichtlich: https://opendata.swiss/en/dataset/amtliche-vermessung-farbig-wmts)
Ich bin mir nicht ganz sicher, wie ich das korrekt taggen würde.
Gleiche ich die Tags 'einfach' an die bestehende Spur an?
Gruss,
Habi

changeset/84627112

Und laut den Gebäudeadressen Bern (https://sosm.ch/building-addresses-canton-berne/) ist node/7346585986 die Nummer 27e und nicht 27d.
Das habe ich auch geändert.

Ciao
Du hast mit diesem Changeset way/75451765 von 'building=yes' auf 'area=yes' geändert.
Das Gebäude steht noch, drum habe ich es wieder zurückgeändert.
Gruss,
Habi

Hey!
You've added way/797816831 as 'building=industrial'.
As far as I can see from the imagery, there are lots of buildings in there, so I changed it to 'landuse=industrial' with changeset/84626647
Have a good day!

You're adding a lot of duplicate data: way/798766071 was already there as way/464030133
I removed it.

Here's another duplicate: way/79863182

The original way is present since two months: way/632841298/history

Also you're adding duplicate ways to ways already present: way/798631821

This is just plain wrong!

Here - again - you added a duplicated way with a 'Guided bus lane' on top of the highway: way/798627432#map=16/10.1663/76.4147

This bus lane is not visible on the imagery, and does not seem to make sense.

The 'bridge' here does not need a tag with 'name=bridge', this is osm.wiki/Tagging_for_the_renderer
I removed the tag with changeset changeset/84464897

And do you have more information about the field here way/798638470 ?
Tagged like this there's no useable information, is it an agricultural field?