I need constructive criticism on this trade I took. Was the grey box an order block, or I just got lucky?

My strategy is; liquidity sweep + Break of structure + order block (or fair value gap) then I execute.

I was trying to gouge wether this was an order block or not. I know it's the candle prior to the liquidity sweep, that's the order block, but I'm confused because ideally the whole move down was the whole 3 green candles that proceed the red candle before shooting up.

T.I.A. !!!