Correct. If you did not have any income from working in 2023 you are not eligible for any child-related refundable credits. There has only been one tax year----2021--for which you could get the child tax credit even if you did not work. The tax laws changed for 2022 and 2023. You cannot get the CTC if you did not work.
For tax year 2023 you must have at least $2,500 of earned income from work to be eligible for the child tax credit.
If you did not have income of any kind in 2023 there is no need to file a tax return.
Unless you also received a Form 1095-A for your health insurance through one of the State Marketplace Exchanges or from healthcare.gov then you must file a tax return.
I did get a 1095 so had to file. Thanks for answering!