how can I increase my flutter web performance and how can i remove leggence in my flutter web? - flutter

Question

I build web application in flutter but the performance of my web application is too bad its not smooth its too much leggy what can I do to solve this problem?
give me suggestions
i also try many solutions but these are not working for my flutter web i also make release of my web that's also leggy like my deub mode.
my pub yaml file
name: doctor appointment
description: Oriel Research Therapeutics online services.
publish_to: 'none'
version: 1.0.0+1
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
# firebase_core: "^0.7.0"
firebase_core: ^1.0.1
# firebase_auth: "^0.20.0+1"
firebase_auth: ^1.0.1
# flutter_signin_button: ^1.1.0
shared_preferences: ^2.0.5
cloud_firestore: ^1.0.4
firebase_storage: ^8.0.6
# The following adds the Cupertino Icons font to your application.
# Use with the Cupertino Icons class for iOS style icons.
cupertino_icons: ^1.0.1
flutter_custom_clippers: ^1.1.2
responsive_builder: ^0.1.2
# velocity_x: ^1.0.1
velocity_x: ^2.6.0
url_launcher: ^6.0.2
provider: ^4.3.2
footer: ^0.0.3
# youtube_player_iframe: ^1.2.0+2
carousel_slider: ^3.0.0
youtube_plyr_iframe: ^2.0.0
get: ^3.25.4
package_info: ^0.4.3+4
modal_progress_hud: ^0.1.3
equatable: ^2.0.0
file_picker: 3.0.0
dio: ^4.0.0
webview_flutter: ^1.0.0
# js: ^0.6.2
page_transition: "^1.1.7+6"
http:
flutter_credit_card: ^2.0.0
font_awesome_flutter: ^9.0.0
dev_dependencies:
flutter_test:
sdk: flutter
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/logos/
- assets/services/
- assets/team/
- assets/images/

Answer 1

Try the below Links. Helped me solve some performance issues by getting rid of page transitions.
https://medium.com/flutter/optimizing-performance-in-flutter-web-apps-with-tree-shaking-and-deferred-loading-535fbe3cd674
https://medium.com/flutter/improving-perceived-performance-with-image-placeholders-precaching-and-disabled-navigation-6b3601087a2b