By searching under the exact last name of Bakalarski and matching shared addresses, I was able to find 2 individuals listed as living with Luzer. Jakob (born October 14, 1904) was the oldest male listed as living at the residence, and I believe that he was Luzer's father. Chaim (born May 20, 1938) was the only other child listed at the residence, and I believe that he was Luzer's brother. All of the family members share a deportation date of April 17, 1943. According to secondary sources, this date indicates a deportation to Auschwitz. I was unable to find any further information on Luzer or Chaim after this date, but according to secondary sources, 97 people were admitted into Auschwitz that date. By double checking jewishgen.org Holocaust database, I was able to find that Jakob was admitted into Auschwitz that day. He was transferred to Dachau on September 16, 1944 and he perished there on November 24, 1944. I believe that Luzer and Chaim perished on April 17, 1943 upon arrival at Auschwitz.
I am going to cautiously mark this as possible until we know more about what happened to Luzer specifically. It is still possible the April 17, 1943 date simply represents a move within the ghetto. Have you checked additional records under Bakalarska?