You must take what the markets are giving you. We can t force high-percentage trades. You will find fewer trading opportunities in a very quiet market with low volume but more chances to make money in an active market. The average profit per trade usually is between -1 point multiplied by the number of shares per trade. Scalping means trading for fast limited profits.
Scalpers make many trades per day.
You must be an experienced trader in order to scalp successfully as execution and timing skills must be very good.