Your child tax credit is used first to reduce your tax liability. After your tax is reduced to zero, then you may receive the remaining refundable amount of the additional child tax credit as a refund.
The rules for getting the child tax credit on a 2021 tax return and now on a 2022 return are very different. For 2021 you could get $3600 for a child under 6 or $3000 for a child between 6 and 17 even if you had no income/did not work. That is NOT the way it will work for your 2022 tax return. The “old” rules are back. The maximum amount of the child tax credit is now $2000 per child; the refundable “additional child tax credit” amount is $1500. In order to get that credit, you have to have income from working. The credit is calculated based on the amount you earned above $2500 multiplied by 15%, up to the full $1500 per child. If your child is older than 16 at the end of 2022, you do not get the CTC. But you may still get the non-refundable $500 credit for other dependents instead.
https://ttlc.intuit.com/questions/1900923-what-is-the-child-tax-credit
Look at your 2022 Form 1040 to see the child-related credits you received
PREVIEW 1040
https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing
Child Tax Credit line 19
Credit for Other Dependents line 19
Earned Income Credit line 27
Additional Child Tax Credit line 28