Corner above the slot with white facing you; the edge is on the left, its top colour matching the corner's top.
Algorithms
U' R U2 R' U2 R U' R'
8 moves · R and U only
YOURS
U' R U2 R' U' R U2 R'
8 moves · R and U only
F2 U2 R' F2 R U2 F2
7 moves
Relations
Mirror
F2L 8
Your algorithm backwards
R U R' U2 R U2 R' U
solves F2L 21
That's why your scrambles are never the inverse of the algorithm: you'd be practising F2L 21 without knowing it. CubeDojo builds a random state with this case and checks it comes out.