How do I delete or deregister my phone number? – BIGO LIVE-Live Stream, Go Live Review

I sign up and it’s not what I was looking for. Good for some people, not for me. I need to delete and unregister my phone number. How can I delete the app? Under settings/account there is no options like that.
Review by ????✌? on BIGO LIVE-Live Stream, Go Live.