web push notification pwa asp web form

i need to buid a project work in asp.net pwa has the following
-sending web push notification
-register information in sql db such as id , name , email,mobile type,.. nesseccery info
-register all messages for the user(title,message,icon,statues)
- the project for example will be in push.example.com , and i can call it by https request from another such as
call.example.com
-i can send for specific user or all
-when user need to get pormission (should be in pop up), also when denied permission display you denied that
-user can unsubscripe
-clients receive the web push notification in desktop or mobile browser (even when it is closed page)
i have an example and i tested is working fine with me , but i need it in asp form not mvc nether than asp core
, provide the api that i can call

this is the examples
https://github.com/web-push-libs/web-push-csharp
https://github.com/coryjthompson/WebPushDemo
this one have pages to see registerd devices
https://webpushdemo.azurewebsites.net/
https://github.com/MicrosoftEdge/pushnotifications-demo-aspnetcore

kindly stick on the budget