Help me with FAFSA & CSS PROFILE, please

Seventh question, did I owe taxes for the untaxable income @BelknapPoint said of $10k med bills? I’m starting to freak out. I used the IRS tool to confirm whether I had to file or not and it said -“ You are not required to file a tax return for 2018
You are not required to file a tax return because your income does not equal or exceed $12,000, nor do you owe any special taxes or have any special situations that require you to file.”

Is it true? Or am I unknowingly owing taxes? @kelsmom, please help me on this one too.