"to make a mistake, to be wrong" is Ошибиться in Russian.
Ошибиться means "to make a mistake, to be wrong" in English.
Listen to the pronunciationWord #2219 of 4,000 by frequency in Russian — level B2.
Не бойся ошибиться, это часть обучения.
Don't be afraid to make a mistake, it's part of learning.