Bubble.io app with API integration (Twilio, Ggle, Ms, Apple calendars, Ggle and Face login, OneSignal, zen.com)

Hi there, I am looking bubble developer to create simple mobile app/wbepage for scheduling online meetings. It should work like this: user is choosing one from the experts he can find on my webpage. He can filter them by prices, reviews (just like fiverr). He can check calendar of every expert he is interested in, and choose date and hour to arrange meeting. After choosing a date, client will pay for the arranged online meeting. After payment confirmation, new meeting will be added to expert calendar. Experts confirms date, meeting is arranged. I would like to use Twilio for videocall and sms. Need calendars integrations (google, microsoft, apple). Loging to the app by google, facebook. Some other features like messages between client and expert, ability of sending files during converstaion or after it. History of transactions, history of invoices etc. UX designer has made for me basic figma designs... i am still working on the UI, but I am already looking for developer to start with the work. For interested developers I can send link to figma UI design.