I don't see anything wrong with your dreams. But as it was said, expectation plays a huge role. If you expect to have obstacles in your way, dark dreams, unpleasant dreamscapes, then that's what you gonna get. Not because your subcon hates you. But because you summoned it.
Precisely. Your conscious thoughts intern create your subcon, so, just like gab said; Consciously expect to have obstacles, and your subconscious soon latches on to those thoughts and they then carry on into your dream space.

Personally, If i was in your situation, As soon as I entered the dream lucid, I would take a seat and poke a whole in the ground. This hole would then suck me in, almost like a portal to a new dimension. Except this new dimension is composed of absolute nothingness. Whilst here, I'd create what ever I wanted and play with it however I seen fit. I would create my own little space where my subcon has little to no influence. Through out the day, I'd be thinking about this place and how wondrous it is, and how i have complete control over it's entirety. Soon, leading to the collapse of the hatred for my subcon's influences on my past dreams. Because, soon enough, my subconscious would be then trained to help me create my little dream world.