Do your own research and don't just rely on only one article that said that the prices of the said coins will be good. Do your own research on each coin and also, how do you know that this coin will yield a good profit margin, what's the basis for that, what's your evidence? There should be an evidence right?
What evidence do you want? You know that this market is unpredictable, so nobody can tell for sure if something will bring you profit or not. This guy just shared his opinion and I agree about TRX as I consider it to be a good long-term investment, because it is not useless. It is the main token of the Tron chain that is the 5th in popularity among Blockchains.
But I can't say anything about XRP, I haven't investigated it yet.