Risk Sizing Question in Crypto Market

Hello everyone, I've only recently started taking the Crypto market seriously. Previously, I focused on DCA, but now I want to try short-term trading. I've been studying Risk Sizing, but I'm stuck because the Crypto market is much more volatile than the stock market. Sometimes it swings 10-20% in a single day, and $BTC and Altcoins don't move the same way. So I'm still unsure how many percent of the portfolio others typically use for Risk per Trade. Are there any special factors to consider, for example, should the risk be reduced further if trading Altcoins with low volume?