I don't really know where to start, so I guess I'll start at the beginning. The kick is a bit strange for what you were going for. It a very slow swooping sine wave, which makes it sound cheap. I probably would have gone for a punchier kick. The clap sounds pretty generic, and I would have liked a different style sample better. A snare would have fit nicely where the clap was. Then we have the lead. First of all, it drowns everything else out. Sidechaining and lowering the volume a bit would help with that. The lead also sounds dry and abrupt, which could have been easily fixed by a small bit of reverb. I also think it could have used a bit more detune to give it more of the supersaw feel. The melody actually isn't that bad. It's a bit simple, but it's better than having it all over the place.
Most of the sound design felt sloppy, but that's to be expected with a beginner sound designer. Really dissecting presets you like can help you choose better and make better sounds. There were some random sounds that I didn't quite like in there, for example, high pitched sweep. It was out of place and was too loud. I'd use presets still until you can get the hang of sound design. The more you make music, the easier it will be to know which sound you want and how to make it.
This song was a bit hard to follow. It had little to no transitions and there were a lot of very abrupt elements to it. Many of the things in this could have used some reverb and it seemed a bit empty in some places. The mixing definitely could have been better. The leads and synths were often too loud. The melody was okay, but it could have used a bit more variation.
I was actually thinking of making an updated version of this. Thanks for the in-depth review! (like you always do) I agree with you about the drums, I wanted to find a better sounding one but honestly I was just slacking, and I didn't look hard enough. I was pretty proud of the lead at first but now that I hear it again it's a little harsh. I actually have no idea about pretty much any of the automation clips and stuff like that, and that could really help this imo. I have to say, while I was making it, the melody was my favorite part. I definitely think this was way too repetitive as well. Also, I'm very new to actually trying to mix stuff, Ambient Step was my first attempt of that at all. I pretty much agree with everything you said in here.
Please contact me if you would like to use this in a project. We can discuss the details.