The base is original from the producer (chords and melodies), but is complemented with elements that complement the song that come from samplepacks, usually, vocal chops, guitars, wobbles sections, glitch effects. It is the standard in which most of producers work, in a project you will find MIDI files made by the producer, but also melodic loops.
The lead has a unique design using 4 different Serum lead layers. The bass in the breakdown is also designed in Serum. The drop bass / 808 was made with an edited and processed FLEX preset. The arp sound is also from a FLEX preset. The atmospheric melody is consist of 2 voice layers from Nexus. A modified royalty-free synth sample is used in the drop, to add more energy and make it sound a little bigger. The track is completed with some (glitch) FX and ambience samples.
Sample pack Capsun - Lo-Fi Soul & Future Beats
Loop name CLF_100_Arp_NiyoWave_Am