Fighting for a sweep from half guard

One thing I'm trying to practice more of is how to sweep better from half guard. I used to be able to either sweep by taking underhook and taking someones back, but people have become more aware of this as blue belts constantly stop me from doing this. I can sometimes get the deep half guard and get on top that way, but every once and a while I will get in really big trouble from there as a blue belt will just sit back and really shut me down and/or pull me into a triangle. I need to start thinking more about other moves. I need to focus on trying to create space, to bump and push them and to create a little wiggle room. I need to think about moving myself instead of moving them to escape. Moves like the friendship sweep, moves where i bridge and pull on their hip if they're based funny. Or just something as simple as trying to shrimp away from them so I can get my leg hooked inside so i can pull them towards me and roll them over. Of course, I can always try going to guard as well.