How to Downgrade to Older Version apps on Android
For many reasons you may want to downgrade your apps to previous versions one is off course crashing
Follow the below steps.
Go to Settings > More > Applications Manager > downloaded tab> click on the app you want to downgrade and revert back to previous versions [steps my vary just find out applications manager]
and click on uninstall Updates after some time it will remove the updates and downgrade it to older version.
Make sure Auto update is disabled on playstore app.