Clicking new game process needs a lot of memory and also good cpu power. If you have to less memory it crashes chaotic. Crash could be at every place in coding on lack of memory. If cpu is to slow you get a notification after 5 seconds on android os that the game hangs and perhaps after 10 seconds it could crash here to?
You can try to free some resources on your phone by temporary shut down other applications. This forum has also some topics where you find some links to test other godot based applications and to test your environment.