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
You need to have a huge capital to make a good spread if you are aiming 1-2% with daytrading and there are also factors like having many altcoins can be so stressful because a lot of them coud go down more than 2%. So the safe strategy is 20%-30% per month and if you start monitoring Eth, it is the best pick to do the swing trades. Eth plunges down 20%-30% in some weeks but will manage to go back up again and it kept happening for months.
People shouldn`t have time frame for making profit with trading. If you believe in some coin invest in it and be patient, price will rise more
then 20-30% after some time, month or two, or more, who knows, we need to be patient.
It`s risk when you hurry to make profit, most likely you will make a mistake in that hurry. Do things slowly and safe, profit will come eventually.