You can get a decent 3D printer for ~$100 USD these days. Look for an original Ender 3 or one of the many clones of it. For double that you can get something pretty good. If that’s the route you want to go.

Otherwise learn some modeling software, if you’re going the 3D printing route then CAD can be useful, I like Fusion 360, some people find TinkerCad or FreeCad easier to start with. Tons of tutorials for all of these on YouTube.

If you just want to edit or make some fun models maybe learn something like Blender.

The current one is way better than any of these. No offense to the designers they look great but I just don’t think they beat out what’s already there.

On iOS at least you don’t need to fully close it. Just pull up from the bottom briefly like you’re opening the app switcher and then let go and it should be unfrozen. Annoying bug, but an easy work around IMO. Not sure if this works on Android or not.