File upload in WebView

Question

I have a simple web-project, the user can upload photos from the camera and from the internal storage - there are 2 buttons, both are inputs with type="file", the first button also has capture="camera" (from the browser the camera shows immediately when the user clicks the button, then he can make a photo and upload). It works very well on mobile devices through the browser. I need to implement the same behavior in Xamarin.Forms app. I used WebView, both buttons provides only file upload from the storage by default, not camera (but the upload works well). I searched for the answer at stackoverflow and other places, including https://learn.microsoft.com/en-us/answers/questions/357886/camera-not-showing-in-webview-on-the-andriod.html, but the best result was the choice from camera and storage by click on any of the buttons, I can make a photo or choose the file, but the photo or the file doesn't upload. Can anyone help me with this issue, please? Thank you