Are there indexes in Russia of fallen wehrmacht soldiers?

Privjet everyone,

I wonder if there are indexes in Russia that contain the names of fallen wehrmacht soldiers in ww2?

I discovered last Saturday that my great great grandfather Urban Baszczok, born in Szymocice, Raciborz in 1905 has german 'Wast' files on the Bundesarchiv Invenio database (which was quite a surprise since nobody knew this in the family, indicating that he served in the army), its also confirmed by a red cross index of him of which I will add the picture.
There were also 2 brothers of his included in the database of the Bundesarchiv. I tried to check on the army grave website of Volksbund.de, but I didn't see any of them, only other relatives that come from the same village or nearby villages that died in Russia and or Ukraine.
Perhaps the Volksbund website is incomplete? Thats why I wonder if there is a Russian alternative.

Here is their information:

(Source: Wast Invenio german archive, deutsche wehrmacht)
Basczok, Alois
Bestandsbezeichnung

Deutsche Dienststelle (WASt).- Zentrale Personenkartei

Geburtsdatum

31.5.1901

Geburtsort

Limsforst (Simsforst)

Unterlagenart

Kartei

Alte Signatur

ZK-B 200/403

Benutzungsort

Berlin-Tegel
-------------------------------------------------------------------------------

(Source: Invenio, german archive, deutsche wehrmacht)

Name

Baszczok, Urban

Geburtsdatum

25.5.1905

Geburtsort

Schymotschütz

Unterlagenart

Kartei

Alte Signatur

ZK-B 200/439

Benutzungsort

Berlin-Tegel

-----------------------------

(Source: DRK suchdienst)

Urban Baszczok: band: 'BU', seite: '521'

Bergmann (Silesian coal miner?)
---------------------------------------------------------------

(Source: Wast Invenio german archive, deutsche wehrmacht)

Name

Basczok, Johann

Geburtsdatum

18.8.1911

Geburtsort

Simsforst/Ratib

Unterlagenart

Kartei

Alte Signatur

ZK-B 200/416

Benutzungsort

Berlin-Tegel

--------------------------------------------------------------------

(Source: Wast Invenio german archive, deutsche wehrmacht)

Basezok, Johann
Bestandsbezeichnung

Deutsche Dienststelle (WASt).- Zentrale Personenkartei

Geburtsdatum

18.8.1911

Geburtsort

Simsforst/Ratib

Unterlagenart

Kartei

Alte Signatur

ZK-B 203/330

Benutzungsort

Berlin-Tegel

--------------------------------------------------------------------

(Source: Wast Invenio german archive, deutsche wehrmacht)

Baczok, Johann
Bestandsbezeichnung

Deutsche Dienststelle (WASt).- Zentrale Personenkartei

Geburtsdatum

18.8.1911

Geburtsort

Simsforst/Ratib

Unterlagenart

Kartei

Alte Signatur

ZK-B 200/416

Benutzungsort

Berlin-Tegel
-------------------------------------------------------------------------------

Kind Regards,

G.T.