Can i chnage g mail version to old

You're referring to the classic Gmail interface!

Yes, you can switch back to the old Gmail interface, also known as the "Retro" or "Classic" view. Here's how:

1. Sign in to your Gmail account.
2. Click on the gear icon () in the upper right corner of the page.
3. Select "See all settings" from the dropdown menu.
4. Scroll down to the "General" tab.
5. Look for the "Switch back to the old Gmail" button and click on it.

Alternatively, you can also use the following URL to access the classic Gmail interface:

https://mail.google.com/mail/?ui=2

This will take you directly to the classic Gmail interface.

Note that the classic Gmail interface is no longer the default view for new users, and Google has been encouraging users to switch to the new interface. However, if you're comfortable with the classic view, you can stick with it.

Keep in mind that the classic Gmail interface may not have all the features and functionality of the new interface, so you may need to adjust your workflow accordingly.