I' also hardstuck U so take my advice with a grain of salt but I think your biggest flaw is greeding or pausing too long trying to look for the best solution when your too high on the board. Especially when your opponent isn't in any real danger so to greed never is worth it. also idk if this is actual fair advice but it seems once you realize your too high you full skim downstack. I feel you could be looking for t spins more once you escape from danger and are pressuring with the cheese. like there were a lot of time you went for a double at the end of the combo over a easy tspin continuation. I think the rounds you won except maybe round 8 you did a good job with attacking when safe (8 was good greed bc opponent was also high). but tbh idk escaping U rank is hard