So for your new project, Flask with Python could be a really good choice. Flask is easy to use and lets you build web apps quickly. This makes it perfect for apps that just create, read, update and delete info (CRUD apps).
Python also has TONS of libraries and help for developers. So it would be simple to find support if you run into issues. Working with Python and Flask means your project could grow over time without problems.
Django is another option that would work well too. It has lots of built-in tools already made for you. So if you think your app might get really big someday, Django could be better. But for a small simple app, Django might be more than you need.
Really it depends on a few things. Like which tech you already know how to use. How much time you have to build it. And if you think your app will get really popular in the future.
In the end, both Flask and Django are great choices. So don't stress too much about picking one - you can't go wrong! The most important thing is getting started. So pick one and start coding, then you can tweak things later if needed. The rest will work itself out as you learn.