Technically YES you can day / swing trade crypto too like Forex, commodities,... you name it.
the thing with crypto is that you need you order to be filled in order for your trade to start or make profit (when selling). so it depend on supply & demand (ask & bid).
Since crypto doesn't have such liquidity, your order may not get filled as you like UNLESS someone fills it, which is not like Forex where your order can be filled as soon as you start i (that's the only bad thing about day trading crypto). Other than that YES crypto is day / swing trader too