I am a software developer who wants to get in the video game industry and has already developed several video games with Unity.

I was starting of thinking to develop a new personal project application. The application is going to be your usual stuff. A register/login functionality, API calls to database, some CRUD functionality, etc.. The most special stuff that I would need integration with is be able to read user's contacts agenda's data and be able to read and send WhatsApp messages.

What would be the best framework to use? Taking into account what I just mentioned, plus the following:
- Monorepo (single code base) for multiple operating systems
- Application must be exportable to Android and optionally to Windows and web
- Framework or software to use must be somewhat related to the video game industry (to indirectly gain experience)

I did some research and I came up with 4 frameworks options, but I am unsure which one would be the best or if my project idea is doable with those frameworks:
- Qt
- Dear ImGui
- Unity
- .NET MAUI Blazor
I already have experience with JavaScript frameworks like React, React Native, Vue and Angular so I am not considering those. Additionally, I do not like Flutter, so that is not an option neither.

Any help, guidance or tip is welcomed, thanks.