So what do you do when you are in the position of not having work to do, and you have asked repeatedly for more work?
Answers to asking for more work have been basically to wait.
What about if you get told not to work on stuff when asking about specific tickets or things that do need to be worked on and add company value?
If your company has an open culture, maybe you could build tools to automate, stabilize, or boost productivity. You could also work on something like a feature or component for the product and test and develop it.
These are suggestions that will play in some cultures and get you fired in others.