Are you Single? What kind of income did you get?
If you are Single and get a W2 anything over 14,600 (2024) is taxable. If you get a 1099NEC you need to report any amount and pay self employment tax. You don't have to file if you only have W2 income under 14,600 (2024) but you can file to get back any withholding taken out in boxes 2 or 17.
You also need to file if you get a 1095A form for health insurance from the Marketplace ACA.
Do you need to file a return?
https://ttlc.intuit.com/community/filing-and-paying-taxes/help/do-i-need-to-file-a-federal-return-th...
IRS Do I need to file? Interactive tool
https://www.irs.gov/help/ita/do-i-need-to-file-a-tax-return
And see IRS publication 501 Table 1 page 2
https://www.irs.gov/pub/irs-pdf/p501.pdf
