Build me a app

We want to create a home services [login to view URL] will contain categories:- 1. AC repair and services 2. Electrician 3. Carpenters 4. Laundry 5. Tailoring 6. Glass cutting 7. Refrigerator repair and services 8. DTH Installation 9. Appliance repair and services 10. Plumber 11. RO repair and services 12. Washing machine 13. Pest control 14. Home security 15. Painting 16. Packers and Movers 17. Car wash 18. Disinfection and Sanitization 19. Education I will send you logo of the app which will come first as soon as he open the app. After that he will enter his phone number to get OTP to do [login to view URL] that he can get all the services category listed either in vertical, horizontal or mix view , which he will click and then he will write his name , address, landmark point, brand name in case of appliances ,RO and others and then problem description/[login to view URL] he will do and submit, then his order will be [login to view URL] I will get a message in my business mail and in backend I want to have simpler excel [login to view URL] thing I want is share option . Also I need whatsapp business integeration. In above there will be search bar to search the category. In bottom there will be 5 sections (home,bookings,whatsapp business or call/message/contact us,bookings in which he can view services booked and profile(in which his name number,photo,address will be there ,payment in which we can do integeration with credit, debit card, upi etc) Another thing I want to put is where technicians/educators/tailors who want to give their services can register themselves with name address,photo mandatory, unique identification number and upload of the documents and services they provide.