Very strange. Looks like you have the correct versions of the SDK and Java installed. Assuming you ran the Android setup.bat with no errors? Also your logs seem to indicate you have some OpenXR plugins enabled still, make sure to disable and delete them from your project plugins folder.
As for the difference between OpenXR and the native XR plugins - OpenXR supports most headsets which means you can deploy the project to any headset you wish and it will just work. With PicoXR (or MetaXR and so on) it will only support this specific headset. Generally I would use OpenXR if possible but havent been able to get it to work in UE yet. Also ASTC is just a texture compression format 
Honestly the whole Android setup in UE is needlessly complicated. Other engines set it all up automatically during installation…