Matty28 you accidently typed in a wrong username so the game automatically created another account for you, what you need to do is press forgot my username and type your email, then you should get an email with all your usernames for this account, if VALORANT is the first riot game you played you should get 2 usernames, one is associated with league of legends and one is not, type in the username not associated with LOL with the same password and it should work, if both accounts are not associated with LOL just try both until you get your account back. If you have any questions you're welcome to ask