how do you expand your vocabulary?

Hey there!

English is not my native language so I'm constantly trying to improve and expand my vocabulary. Sitting down and drilling over random lists it's not a sustainable method so I learn it from the content I consume which is more natural. IMO the best is to keep the context where you find the word but it kills the flow to save the words and later having to create anki decks with the context.

Anyone has developed an efficient method or is using any good software tool?