Yes, If fund is small amount in trading, lose also will be low, beginners should start trading or gambling with small capital, it's less risk. Also expert traders also use affordable amount in trading. Mostly beginners bought wrong coins with big amount of fund even at high price. Trading and gambling risk is almost same but both of different.
Professionals may use more amount to trade. Let me let you know what a professional trader is. Professional traders are not traders that have in-depth knowledge about indicators, analyses or whatsoever. Professional traders are traders that trade and make money from trading. They can be 95% or more accurate in winning. So that will let them increase the money they use to trade. But as for beginners and those that are still looking more than win or those that are still using trading to gamble, they should use small amount of money that they can afford to lose.