It’s a good idea to not have a username called “admin” as it means that any hackers already have access to your username. If you already have a default called “admin” you can change it with this snippet in your SQL database. Make sure to put in your new username.

 UPDATE wp_users SET user_login = 'Your New Username' WHERE user_login = 'Admin'; 
Happy
Happy
0 %
Sad
Sad
0 %
Excited
Excited
0 %
Sleepy
Sleepy
0 %
Angry
Angry
0 %
Surprise
Surprise
0 %