need to convert my webview app to haybrid app

I jast build my small busines website. I build for it a webview app in play store. It facing two proplom first the app speed depend on the customers internet speed. If they have a slow internet my app will be slow. Second my web have upload file pdf button it works in all mobile browsers only in my app when a customer click on the button no thing it happens I need to convert my appto a haybrid app to solve this problem My app link [login to view URL] Read Less