Forgot to file in 2023, need some guidance

Hello! Last year (2023) I forgot to file my taxes. I remember filling out the forms but never submitted because I was waiting on some of my tax documents, in the middle of a job change, etc. it just slipped my mind.

I know I didn't owe last year. I have never not received a refund. I don't really have any investment income and just take the standard deduction, and pay my student loans, but that's about the most of it.

My question: is it possible to file my taxes from last year online? Or is contacting the IRS and submitting written paperwork my only option?

Thanks for the help