i want sound can hear together if sensor to hit. just like a real drum
Sorry but you can do that with the setup you have. The proper word for what you want is “polyphonic “ and you can not get that with sounds stored on an SD card.
There is a libiary that will do two samples at the same time but it is limited to two and is not very good. One reason for that is that is that it drops your sample resolution by half.
Look into making the sound from a MIDI sound module, then the polyphony problem is moved out of the Arduino and into the sound generator.