Winlator's focus on application compatibility (rather than full OS emulation) offers a glimpse of a more efficient future. Rather than emulating an entire computer, why not run Windows applications directly?
BetterLimbo may not work on Android 13+ at all. The developer explicitly notes: "Limbo may not work at all on Android 13+. You may not be able to get Limbo's files in the Android/data folder on Android 13+".
Always take snapshots of your QCOW2 disk before major changes.