Take whichever gives you a higher deduction. But some itemized deductions are limited like Medical and SALT (State and Local Tax).
For 2024 the standard deduction amounts are:
Single 14,600 + 1,950 for 65 and over or blind (16,550)
HOH 21,900 + 1,950 for 65 and over or blind (23,850)
Joint 29,200 + 1,550 for each 65 and over or blind (30,750/32,300)
Married filing Separate 14,600 + 1,550 for 65 and over or blind (16,150)
Here's schedule A for itemized deductions. Fill it out by hand and see if it's more than the SD.
https://www.irs.gov/pub/irs-pdf/f1040sa.pdf
