If anyone wants to downgrade Joiplay without unnistalling it (because they don't want to delete or backup their games), here's a solution
First, install adb, pair your device, and connect. Install will vary per android and pc os (So, google it). You are going to use the command line for this
Go to your adb folder (usually named platform-tools). And download the joiplay apk files https://www.patreon.com/posts/joiplay-1-01-400-5186794 (thanks Phoenix for the link)
to send to pc, do
adb pull <apk location>/joiplay-101400.apk adb pull <apk location>/renpyplugin-10040.apk
(alternatively, do <apk location>/*.apk this will send all apk files in this folder to pc)
(You can also download the joiplay apk files in your pc, save them in the adb folder)
To send to android tmp folder, do
adb push joiplay-101400.apk /data/local/tmp adb push renpyplugin-10040.apk /data/local/tmp
(alternatively, do *.apk /data/local/tmp this will send all apk files in this folder to android tmp folder)
now, to install, do
adb shell pm install -r -d /data/local/tmp/joiplay-101400.apk adb shell pm install -r -d /data/local/tmp/renpyplugin-10040.apk
And that's all. If you want to install on a work profile, here https://stackoverflow.com/questions/56951666/install-apk-in-work-profile-via-adb...Read first and second solution
Please read the instructions carefully, I explain what each command does so you don't do something you didn't mean to do in the process (None of these commands can delete your files). I leave an example below of what this looked like for me
The game works for me on this version, I am using android 11