If you lost your WordPress admin password, there are 3 methods you may try to reset them.
You may refer below guideline :
Method 1: 'Lost your password?' button
1) Open your WordPress admin login page which is usually located at http://yourdomain.com/wp-login.php.
2) Click on the 'Lost your password?' option, fill out the username or email address.
3) Click on 'Get New Password' button. An email will be sent to your registered email address.
3) Log into your email account and you will find the email with URL link to reset the password.
4) Click on the link and fill in the new strong and unique password. Click on 'Reset Password' button.
Method 2: Softaculous Apps Installer
1) Login to your cPanel and click on Softaculous Apps Installer.
2) In the Softaculous interface, navigate to the top right corner and find "All Installations" icon.
3) You will see a list of scripts you have installed. Find the WordPress installation that you are require to change the admin password and click on the pencil icon ( Edit Details ).
4) Next you will see installation details page. Scroll to Admin Account section and enter your current username and the new password in Admin Password field.
5) Once complete, scroll to the bottom of the page and click on 'Save installation details' button.
6) you may now log in to WordPress admin site using the new password.
Option 3: phpMyadmin
If you have no access/forgot the email account linked to your WordPress admin panel, you can reset your password via MySQL database & phpMyAdmin.
1) Login to your cPanel and scroll to 'Files' section' click on File Manager and click on public_html folder.
2) To check which database is used for your WordPress website, open the wp-config.php file.
3) Go to cPanel and scroll to 'Databases' section and choose phpMyAdmin
4) Select the database written in wp-config.php file, navigate to table wp-users and click on 'Edit' next to the admin user.
5) Then, type your new strong password into the 'user_pass' box, select MD5 in the Function column and click Go to save them.