Ok neither of these are easy but as a long term strategy to do think its best to day trade and try and get 1-2% a day or invest in a couple of coins and try and get 20% over a month
No such coin. the market is fluctuating so if you make a profit today it easy to lose that money tomorrow. people only get 20% and more when the market is bullish that is why I suggest HODLing only during the market bull run because there is no profit HODLing a coin when the market is bearish.