[7][8] Day one of the 2022 European Junior Swimming Championships, held starting on 5 July in Otopeni, Romania, Molnár swam a 55.11 for lead-off leg of 4×100-metre freestyle relay in the preliminaries to help advance it the final ranking second, before anchoring the relay with a 54.13 in the final to help achieve an eighth-place finish in 3:54.60.

[11][12] For day four of competition, Molnár won the gold medal in the 200-metre backstroke with a time of 2:10.31 to finish less than one second ahead of the bronze medalist in the event Evie Dilley of Great Britain.

[15] She followed up her performance with another gold medal the following day, winning the 100-metre backstroke with a time of 1:00.88 to just finish ahead of silver medalist Roos Vanotterdijk of Belgium by 0.02 seconds.

[17] In the morning on day one, competing in Rome, Italy at Foro Italico, she ranked second in the preliminaries of the 200-metre backstroke and qualified for the semifinals with a time of 2:09.53.

[37] She followed her semifinals swim up with a 2:02.40 for the second leg of the 4×200-metre freestyle relay in the final, helping win the gold medal with a time of 8:04.70.

[38][39][40] Finishing in a time of 1:01.44, just 0.01 seconds ahead of Aimi Nagaoka of Japan, in the final of the 100-metre backstroke the following day, she won the gold medal.

[41][42][43] The morning of day three, Molnár ranked first in the preliminary heats of the 200-metre backstroke with a 2:11.62, which was less than five-tenths of a second ahead of second-ranked Mio Narita of Japan, and qualified for the final.

[44] In the evening final, she won the silver medal, finishing 1.29 seconds ahead of bronze medalist Laura Bernat of Poland with a time of 2:09.80.

[46][47][48] Two days later, in the preliminaries of the 4×100-metre freestyle relay, Molnár split a 58.43 for the anchor leg to help rank second overall and qualify for the final.

[54][55] Starting off the 2022 Hungarian National Short Course Championships, in Kaposvár in November, Molnár placed fourth in the 100-metre freestyle with a time of 54.77 seconds and fifth in the 50-metre backstroke with a 28.56 on day one.