this doesn't matter but I found it interesting bc of all the people recommending tools like shelter and insular, using profiles or work profiles to separate data would be siloing not sandboxing.

edit: with that said, as others have pointed out, apps are already sandboxed on Android. they can only really communicate with mutual consent ipc. so say for example, Google services can communicate with other Google apps because they both explicitly call for each other. while ipc is still technically something to think about, the mutual consent requirement makes it somewhat difficult to make malicious use of it.

apps aren't capable at accessing other app data whenever they wish, though. even with storage permissions granted it only really has access to user directories (downloads, documents, etc.).

edit2: additionally, it's worth noting that using any profiles (work or normal), will increase ram and battery usage by a decent margin as this will make a second user with all system apps running alongside your main user.

any solution involving root should also be considered a non-option as well, since gaining root access completely cripples androids security model.