You must always file a tax return for every year where your income is such that you are required to file. If you can’t file electronically, you must print your return, sign it, and mail it to the IRS. Don’t forget that you must also print, sign, and mail your state tax return.
there are a number of reasons that you might not be able to file electronically, and we can’t really diagnose them for you. For 2023, since you have not filed previous years, you could try using zero as your AGI to verify your identity, that might allow you to e-file. But you still need to print, sign, and mail all of the previous returns that you have not filed.
if the IRS does not allow you to e-file, and it is not a simple error that can be easily corrected, it is usually not worth it to struggle. Print your return and mail it.
