Then an official PocketMine build won't work for it, sorry. And we won't help you with unofficial builds/forks/spoons.
they use plugins but things they dont care get removed since it's meant to be private and used only by LBSG again steadfast isnt meant to be used by anyone who dont know how to use it it's made by LBSG for LBSG and only public because of licenese
Get a 64 bit phone and try that : https://github.com/Frago9876543210/PocketMine-MP-Android/releases it will download the last build (even the developement build, saldy :/) But there is no plugins section, so you need to download the phar's and put them in plugins file. Anyways, running pocketmine servers on a android device is not a good idea because of their ressources, oh yes get a 4 GB RAM phone with dual core on it but still. The RAM is not like on a laptop or a PC (even there, don't run your servers on a laptop..) Their RAM are made for phone, for low quality applications. Try to run things like Unreal Engine or Unity or any softwares on that and it will be slow (YES, even Gimp XD).
Ikr but it's juqt a better experience with vps. You are free at 100 to do what you want, I installed and setup my pocketmine by myself and I edit my plugins, just depend of what you like.