The problem is likely that you never started at the basics, and never learnt what you needed to solve your problem. You also have a clear idea, and try to build all of it at once. A common mistake.

You want to build a todo app? Fine.

You are going to need to have some website. Cool. You only need to google how to display “todo list” on the page. 5 minutes of html will teach you that.

Then a list. Again 5 minutes of html.

Then add an entry. 10 minutes of JavaScript.

You don’t need react. You don’t need to know closures. You don’t need lambdas. Nobody needs tailwind ever.