I saw a therapist and had my daughter that was like this evaluated. She had ADHD/Anxiety but the most helpful part for me was him flat out telling me she was insecurely attached to me. I have since learned a lot about Attachment theory and emotional connection/availability. It’s changed so much about the way I parent and my relationships with my daughters are so positive now. Maybe this has nothing to do in your case, but for me it was painful to realize/admit yet utterly life-changing. This daughter is a completely different child now & even casual friends have noticed the change.
My kids currency is definitely screen time. For my 7 year old, he always wants to earn money, as well, partly because he is obsessed with Pokémon now and wants to buy the cards. I don’t like bribing, but DH gives him opportunities to do extra chores to earn more allowance. We threaten losing screen time a lot, which works, and if it doesn’t, we follow through. When we had a serious behavioral issue, DS1 lost screen time and his allowance for a week, which was very effective.