Welcome on board, Instead of suggesting you any single option, I would try to give you a short idea of both the options. Trust me, both the options are far better than gambling.

Trading is something that making profits from the short term movements of the price chart. You can take the marginal advantage with the features like  leverage in trading which enables you to create a position of higher amount without actually investing that much amount. You can multiply your returns (profits or loss) with that feature.

Investing is something that you buy some coins and forget about it for the minimum period of a year, two or more. It is intended to earn profits in the long term. People who bought bitcoins in 2010/2011 got multi fold profits on their investments.