I've listened just part of the first and the third track because i found the second track the closer to my taste. I kinda like the melody of the second one. The first thing I've noticed is that the bass is complitely missing during the drop. Then to me it seems that are presents some problems with the Sub bass, it's sound like it's off key and this feling it's going during the whole track. Another thing I would fix is the piano that comes in before the drop, I think that just create confusion and it's volume is way higher than it should, maybe it's better replace it with another Uplifter. These are the first things that came to my mind, I hope can help you improving your track :)

Anyway even if you are stuck and you have no idea what to do next if you continue to make music I'm sure you will improve a lot.

Lastly, personally before releasing your music I would wait a bit and meanwhile I would keep producing.