I've tried everything. I've tried visualisation, I've tried taking deep and slow breaths before games but nothing is working. I've never really been a confident hooper and I want to change that. Please anyone tell me what to do or atleast the steps to gaining confidence

Look, I've been hooping for 4 years. My confidence was not at a good level. I kept on getting blocked and I have a tuff layup package but I cant finish. I don't know how to use my body to dribble and finish.