Her hometown is Haifa, Israel, and her parents, Anna and Oleg, are computer science engineers.

[4][3] Her brother Ron Polonsky, who is 14 months older than she is, is a competitive swimmer as well, and competed for Israel at the 2020 Tokyo Olympics.

[6] At the 2018 European Junior Swimming Championships in Finland in July, she came in 4th in the Mixed 4×100m Freestyle Relay.

[6] At the 2018 ATUS Trophy in Graz, Austria, in April at 15 years of age, she won a gold medal in the 200m Breaststroke (2:32.77), and a silver in the 200m Medley (2:15.65).

[6] At the 2019 European Junior Swimming Championships in Kazan, Russia, she won a bronze medal in the 200 IM (2:14.29).

[7] At the 2020 Rotterdam Qualification Meet in December in the Netherlands, she won the silver medal in the 200 L IM with a time of 2:13.26.