Two opposite edges are yellow on top, a line through the centre. Hold it left to right.
Algorithms
F R U R' U' F'
6 moves
YOURS
Built from
F + Sexy move + F'
Loose moves
F
Trigger
Sexy move
R U R' U'
Loose moves
F'
Part of
2-look Dot
Relations
Your algorithm backwards
F U R U' R' F'
solves 2-look L
That's why your scrambles are never the inverse of the algorithm: you'd be practising 2-look L without knowing it. CubeDojo builds a random state with this case and checks it comes out.