To change your language settings:
- Sign in to your Twitter account.
- Click on your profile icon and select Settings and privacy from the drop-down menu.
- Click on the Account settings section, and choose your language from the Language drop-down menu.
- Click Save.
- You will be prompted to enter your password, click Save Changes to confirm the change.
If you're having trouble saving your settings, please read Why are changes to my account settings not saving?