Last time a fake id worked, just searched for an id sample online and gimped it to match the name and the date on the google acc.

Didn't even have to change the default photo.

This was some years ago, idk if it still works tho.

Wasn't there a website where you could get ai photos and videos for this?

There’s a user script for this that I hope works for you: https://greasyfork.org/en/scripts/521089-youtube-age-restriction-bypass-stealth-version

In what country?

Credit card is the best of the options. There are all sorts of strict rules and restrictions about how companies store and use credit card information. Those rules don't exist for the other options.

Can't you use a VPN and route your traffic outside of your country?

Have you tried mirrors?

Tampermonkey extension still works for me to unlock age-restricted videos. Is it having issues for you?

If you don't have it, check out these two links:

https://greasyfork.org/en/help/installing-user-scripts

https://greasyfork.org/en/scripts/521089-youtube-age-restriction-bypass-stealth-version

It's got instructions for nearly every browser. Once you have the extension you can install whichever scripts you like. I mostly use it for verification bypass but there's a lot of other cool stuff you can do too.

For me what worked is restating the router. I read that you use VPN, so I don't know I it will work.

It almost certainly won't work but I'd be curious if any test credit card numbers work for that purpose. They still pass the Luhn algorithm, but I'm guessing Google is still gonna reach out to some service to verify the CC details.

Test cards: https://docs.stripe.com/testing

if all fails i can highly recommend invidious. you can also import your youtube subscriptions

good luck OP

EDIT: yea... age restricted videos are off the table though.

Can you try to make a new account? Or use any of the YouTube frontends?

How did you do it before?

Why would you want to?