If you are afraid of the risks associated with trading bitcoins and other cryptocurrencies, it's time to try betting. There are many platforms at the moment, all you need to do is find the highest reward coins.
Betting is riskier than trading, you can never expect good returns in gambling especially when you don't know about it, It is the same as trading but at least, you can strategize your trades unlike betting will you just depend on luck.
To be honest, it is really hard to think about passive income here in crypto especially when you just have limited knowledge about the market. But it you already have enough knowledge in crypto it could be better not to rely on this, much better to have another source of income outside crypto. To start a small business might be sustaining and could possibly become a passive source if it clicks.