Fathi Abdelmalek

php is the best for beginners, and one of the best for web development at all, all the host servers can handle it, a basic knowledge in java is not enough for build a web site, but a basic knowledge in php is enough. learn php basics and oop and mvc design pattern or any framework like Laravel (optional), and javascript for frontend (a framework like React or Angular is optional but good) and you will build any web site you want.

Flask is for small apps, Django is most secured, faster and more powerful than others, and can integrated with many other tools like js frameworks and firebase, and have many built-in features like authentication and admin panel ... i don't know a lot about Node.js but its also great framework, but not for beginners, and remember that the user can disable js from the browser.