Switch to Android 7.0 from 8.0?

I have a Huawei Mediapad m5 where I have Android 8.0 and wanted to ask if I could switch to Android 7.0, because you can move 8.0 apps on the SD card. Is it possible and maybe you know where?

So if you have an SD card slot and also has an SD card in it. Are there different apps with which you can move data to your SD card. That works quite well! You just have to fumble in and then it's easy. Take a look at some tutorials: Data on an SD card Dragging on the phone with apps

Unfortunately, this does not work on the android 8.0, so I've tried a lot…