Make a website through the API, is it reasonable?

Question

API

Hello everyone, for the last 3 years I have been very actively writing various software for Windows, but now I want to master the web.
It's hard for me to get used to js because of its "super" typing compared to C#. I'm used to the fact that everything is structurally beautiful and convenient to debug. I tried a couple of frameworks, Angular, Vue, React a bit, it became more convenient to make dynamic data on the page, but php as an API is also sad :c. I have 2 questions:
1) How do I rewire my brain for understanding how JS works? or what tools to use to clearly see objects and so on.
2) I want to make a website according to this principle:
At the beginning, I will make an API service, I still don’t know on what. Probably php :c
Then I implement the site as a View using the API. In theory, I will get a site that simply uses the API and also get an API for interacting with the site in my own programs.

Answer 1

No PHP needed, write in C#, ASP.NET. Or Python or Golang.
For the client, check out TypeScript - very similar to C# and possibly Angular.io - they have a complete framework and nice docs and how to intros.
To delve into the topic, I made a mobile application for accounting for debts on Ionic.io (Angular) and a server part on Go lang - https://DebtsTracker.io