@humbl3one hey, i just installed touch today, andnhad the same question.
Via google found anbox and now have whatsapp running!

@lakotaubp anbox works fine for whatsapp

Try it!

I installed whatsapp today by doenloading apk to laptop.
Then adb push /mypath/whatsapp.apk /home/pahblet/downloads

Then adb shell so u are logged in to shell of phone
Adb ibstall /downloads/whatsapp.apk

That was it. It just works.

Phone rebooted couplenofntimes but now all is well