If you wish to use pure micropython with your M5Stack device rather than UiFlow you can download these modules and transfer them to your M5Stack with a program such as uPyloader, VScode, Mu or Thonny
All these modules were created by awesome members of the M5Stack user community. You can find the original repositories here:
LCD Module https://gist.github.com/pklazy/9fa33b07b337cb61e415377e0bbb6616/revisions
MPU6886 https://www.hackster.io/324677/fun-with-atom-matrix-323e3b
Wifi Manager, AXP192 and other misc modules https://github.com/karfas/M5StickC-upy