Hi,
If you have phpmyadmin access then you can change your website password easily.
1. Head over to PHPMyAdmin using your cPanel (or the hosting panel that your hosting service supports).
2. Click on your WordPress database.
3. Navigate to and click the table wp_users.
4. Edit the row with your WordPress username.
5. Now, in the user_pass field, change the function to MD5 and enter your new password in the Value section.
6. Click “Go” or similar option at the bottom to update the table values.
Method#2 – The Short way through MySQL
1. Follow the first 3 steps of the above method.
2. Go to SQL or MySQL section in your PHPMyAdmin.
3. Now, enter the below given query:
UPDATE <code>wp_users</code> SET <code>user_pass</code>= MD5('yourpassword') WHERE <code>user_login</code>='yourusername';
Put your new password in place of yourpassword and replace yourusername with your WordPress username.
4. Click “Go” or similar option at the bottom to execute the query.
Above both method will work.