C++ vs C# vs Java for Linux/Android as a second language after Python. What to choose?

Question

Java

Hello.
At the beginning of my journey, I got acquainted with the basics of many programming languages. But I didn't delve into one.
After a while, I made my choice. Python.
Now I continue to learn Python, develop web and application applications.
However, I understand that I need to move on. There are goals and objectives that cannot be solved with Python:
1) Creation of dynamic libraries for compiled programming languages;
2) Programming for Android;
3) Performance.
Option 3. C++/C#/Java.
Let's look at each option.
C++:
1. Productive language;
2. Lots of libraries;
3. I don't know if programming with C++ under Android is difficult. Those who have experience, share;
4. I enjoy programming application logic. It's hard not to program in C++ without being relatively low level;
5. I will spend a lot of time before real applications.
C#. My favorite programming language:
1. Syntax, which is convenient to work with;
2. Good development;
3. Unity, Monogame;
4. My second system is Linux. There is NETCore, Mono, but for some reason all C# servers run on Windows Server;
5. The future of C# depends on Microsoft policy. And I know about the .NET foundation.
Java:
1. Everything is perfect;
2. But with development, it would be better;
3. With different Oracle policy;
4. I am blind. The user interface is not available for our specialized Linux programs. But I could do it in Python;
5. Kotlin.
I do not expect to meet a specialist here who would be familiar with 3 technologies at once, but I am counting on your opinion.
All of these 3 options have significant disadvantages for me. But there is no alternative. For this reason, one must make a choice from these.
By choosing C++, I get everything I need, but as a side effect, I get a brain explosion;
By choosing C#, I'm sacrificing Linux, and pinning my hopes on Microsoft;
By choosing Java, I'm sacrificing the GUI on Linux, and again, Kotlin and Oracle...
What do you think?
Thanks in advance!