It is possible to create a standalone game with an exe file that can be executed anywhere. But it is not recommended to use it since it's not guaranteed to work when shared to other computers. Only the installers are stable enough to be shared.
If you still want to do it read the last bullet point about standalone executables in the "readme" file under Test & Build.
https://github.com/mooonbit/BubbleWrap/blob/main/README.md#test--build