You can change your WordPress password from inside the WordPress dashboard if you know your current login details.
- Log in to your WordPress admin area.
- Go to Users.
- Select Profile.
- Scroll to the Account Management section.
- Select Set New Password.
- Enter your new password or use the generated one.
- Select Update Profile.
Your new password should work immediately.
Use a strong password that is not used for any other account. If more than one person manages the website, each person should have their own WordPress user account.