I mean I am not a fan of C++ (though I don't hate it either), and I love how easy and well libraries for e.g Python works together and how easy they are to find

I mean I am not a fan of C++ (though I don't hate it either), and I love how easy and well libraries for e.g Python works together and how easy they are to find and install, but I don't think it is necessary to go all the way to native code -- Java/Kotlin on the JVM performs pretty well (and you can always outsource the heavy parts to C).