Did you get a W2 from each job? What mistake?
You don't have to file if you only have W2 income under 12,950 but you can file to get back any withholding taken out in boxes 2 or 17. But you don't get boxes 4 or 6 back. If you got a 1099Misc or 1099NEC you have to file it as self employment income no matter how small the amount.
Filing requirements for a dependent
https://ttlc.intuit.com/community/children-dependents/help/do-i-need-to-file-my-own-taxes-if-i-m-a-d...
The Standard Deduction for an individual for whom an exemption can be claimed on another person's tax return is limited to the greater of:
…..$1,150 or
…..Your earned income for the year + $400 (but not more than 12,950))
So you would get a minimum of $1,150.
