I want to see what is a professional tournament for improve my skills and if I lose I train until i am a good player

Hi ! My name is Alexandre Sin 16 year old ans i'm a french player (you can call me alex)

I'm playing Fortnite since January, i have for now 120 top 1 but i don't have a great K/D (0.94) because i'm playing not very nice during Season 3 and 4. My K/D in Season 6 is 1.56

I actually want to train in build because i have a good aim but in build i am slow so if a team Can train me dm me :p (i play with a controller)

I don't have experiences in LAN or tournaments (i don't know how to get in)