Do I need to submit self assessment even though I didn't have any income?

Hello, I arrived UK in 25 July 2021 by BNO Visa. In the first tax year 2021/2022 until now, I didn't have any income since I am a house wife. So I checked through the Self Assessment page and answered all questions with result was not required to submit the self assessment tax return. However, recently I received some information from social media said even though you don't have any income, you still need to submit self assessment. So I am very confuse now. What should I do? Please advise next step. Thanks