How and what is better to use to launch the application?

Question

Flask

Good afternoon, dear readers!

I really need your help.
For the first time, I need to run the simplest web application in a virtual machine, hence the question: "How is this done and what software is best to use (in order to avoid complications)?"

PS > I found many options and examples on the Internet, but they are different everywhere and in favor of lack of experience, I can’t understand which one is more straightforward.
Last variant found: test

Answer 1

docker for deployment, gunicorn as webserver for flask, nginx as main webserver

Answer 2

https://www.pythonanywhere.com/