Good stuff man, very nice, the synth is the pulv, you can click on it somewhere not on the buttons and press the let the sideways triangle that pops up and you can change the presets, and you can also init the presets and start on your own, by changing turning on octaves on/off and changing tunes and octave and waveform and so on.
iv realized iv got alot to learn b4 i can tell anyone what they should do :/ i dont consider myself good i mean i like this track so im not sure what you could do