Kinda hard to say, there could be a lot of factors at play. Also, it's not entirely clear what are problems, as you mention "I found a lot of bugs, this is ok and not problem".
For the issues with Android 9, are you getting anything in the console, error log, or anything else that would indicate what is causing the crash? If not, then is there something in level 2 that isn't in level 1 that could be causing the crash?
For the Android emulator, it's probably that the graphics emulation isn't 1 to 1, or that Godot is using OpenGL extensions not supported by the emulator. I would try exporting with GLES2, if you are not already, as its likely better supported than GLES3 by the emulator.
Not sure on the font edges or images. I would check the import settings and make sure filter is set to true.
