[5.install dewadw.bluearchive.app
If u still have the BA mod app, u can view in-app file with zarchiver or etc, then u can go to assets/lspatch/module/. In there u can see a file with .apk ext, just install it and activate it with lsposed ]
follow the tutorial, not active thd mod apk in LSPosed but the dewadw.bluearchive.app.
then, delete the mod apk and install the original apk (otherwise you will be kicked out by "illegal program has been detected" ).
you will run the game by the original apk with dewadw.bluearchive.app on LSPosed.
good luck~