Most amateur producers struggle with EQ and compression. When you drop a kick from a generic "Trap Supreme" kit, it often sounds flat or boxy. When you drop a kick from the Starboy Outtatown kit, it already has a smiley-face EQ curve applied (boosted lows, boosted highs, scooped mids).
While the kit includes melody loops, the magic is in the one-shots. Loops are crutches. Use the kick, snare, and hat one-shots to build unique patterns.