here's a lil tut that worked for me on mumu emulator android 12,
1.get emulator/phone rooted(obviously), and get Mt manager along termux
2.download the file and extract it
3. navigate thought and then paste the mlbb.sh into "/data/tmp"
4.go to termux and give su with the command "su"
5.now we use "chmod 777 /data/local/tmp/mlbb.sh" to execute it
6.go to folder and execute(and paste key "GW-D4E8-0E2D-964B-8081")