Ok, I somewhat have to correct myself. It seems like Germany itself does not buy russian oil anymore. However the picture isnt that clear for russian LNG (at least according to what I found).

It looks like, that russian LNG has been banned in March last year (as according to this article). However it is quite hard to find out if we still import russian LNG. Until the end of January last year germany was still happily buying russian gas (source). Since the european LNG network is a shared network it is impossible to determine, how much of russian gas, that still gets accepted at other terminals reaches germany. SEFE (the company that operates the gas terminals in countries like france and belgium) claims, that it is not sending russian gas to germany, but its basically impossible to track the origin and destination of the gas molecules as soon as they enter the pipeline. So while germany itself probably isnt buying it directly, we very probably still heavily depend on russian gas imports (source).