I need to file for 2023 not 2024. But the app don't change to 2023. How do I make it change so I can file for year 2022 and 2023

Sorry, Online is only for 2024 now. Online for 2023 and prior is closed now so you can not start a new 2023 or prior return or finish one. You have to do each year separately

How to prepare a prior year return
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-prepare-a-prior-year-tax-return/00/25984

To do a prior year return you have to buy the Desktop program here,
https://turbotax.intuit.com/personal-taxes/past-years-products
You will need a full Windows or Mac to install it on.

If you have a simple return and want to file for free you can fill out the forms by hand. Here are some basic forms…..

Here is the IRS 2023 Form 1040
https://www.irs.gov/pub/irs-prior/f1040--2023.pdf

or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-prior/f1040s--2023.pdf

And 2023 Instructions
https://www.irs.gov/pub/irs-prior/i1040gi--2023.pdf

2023 Tax and EIC Tables
https://www.irs.gov/pub/irs-prior/i1040tt--2023.pdf

Sch 1 : https://www.irs.gov/pub/irs-prior/f1040s1--2023.pdf
Sch 2 : https://www.irs.gov/pub/irs-prior/f1040s2--2023.pdf
Sch 3 : https://www.irs.gov/pub/irs-prior/f1040s3--2023.pdf

Then when you do file 2024 enter 0 for the 2023 AGI since you are filing 2023 late.

You have to print and mail prior year returns. When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return. Don’t forget state.

Important! Mail Federal and State in separate envelopes and mail each year in separate envelopes.

You have to buy the Desktop program for each year you need to do.  Each  year is separate.    Here is 2022 blank forms.

Here is the IRS 2022 Form 1040
https://www.irs.gov/pub/irs-prior/f1040--2022.pdf

or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-prior/f1040s--2022.pdf

And 2022 Instructions
https://www.irs.gov/pub/irs-prior/i1040gi--2022.pdf

2022 Tax and EIC Tables
https://www.irs.gov/pub/irs-prior/i1040tt--2022.pdf

Sch 1 : https://www.irs.gov/pub/irs-prior/f1040s1--2022.pdf
Sch 2 : https://www.irs.gov/pub/irs-prior/f1040s2--2022.pdf
Sch 3 : https://www.irs.gov/pub/irs-prior/f1040s3--2022.pdf

You will have to get a 2023 Desktop software to do a 2023 tax return.

See the TurboTax page File your 2023 taxes