As xmasbaby0 pointed out, you didn't say what the nature of your earned income is. There are other rules that apply to everyone, not just dependents. If you have self-employment income of $400 or more you are required to file a tax return. You are also required to file if you received advance Child Tax Credit payments or advance Premium Tax Credit.
Rather than trying to figure out all these rules, you can simplify the decision and eliminate the confusion by using the calculator at the following link on the IRS web site to see if you have to file a tax return.
Do I Need to File a Tax Return?
