@vladius - yes, you can be "not married" and head of household at the same time, but that requires you to have a qualifying dependent to file HOH. Otherwise, you are required to file "SINGLE".
When yiou are 'not married', there are only two filing status options: Single or HOH, but that HOH option requres the qualifying relative.
Only the medical expenses that exceed 7.5% of your income are tax deductible. and if that resulting number (assume no other deductions) doesn't exceed your standard deduction, TT will use the standard deduction.
if you are filing SINGLE, your 2022 standard deduction is $13,950. If you can file HOH (and I am not clear you can), your standard deduction is $19,400.
