What are the highest risk/return potential stocks or industries right now?

My opinion:

– Still some EV companies if they can steal market share from tesla, also chinese EV is huge risk not sure about return

– Cannabis but even if it gets legalized its not 100% that small cannabis companies will boom since big companies are going to enter the market

– Meme stocks

I cant see any other business going 200%+ returns in 1-2-3 years