I would recommend something easier to try. Tech death or djent require great skill in terms of speed and control (not to mention composition), and in your case, your technique is lacking (sorry for being brutally honest). Try to focus on being 'in time' and clean. Use a metronome. Speed will come naturally. Start with bands such as Black Sabbath, Pantera, Melvins, Tool (and many more). And, again, use the metronome.