Can I have some English sentences using the word 'louchely'?

Sure! Here are a few sentences using "louchely":

1. He lounged louchely on the couch, exuding an air of casual disregard for the world around him.
2. The artist painted the scene with a louchely decadent flair, capturing the essence of nightlife in the city.
3. She spoke louchely, her Words dripping with sarcasm as she dismissed the formalities of the occasion.