just wanna ask how can I set my apps into sandbox automatically I mean
when I click the shortcut icon in the desktop it will run automatically in the avast sandbox so that I don’t always click avast and go sandbox features and put the app in it
Searched FAQ ? >> https://support.avast.com/
no answer 
You should be able to right click on the program and from there
https://screencast-o-matic.com/screenshots/u/Lh/1583521339613-6047.png
Select Run in sandbox for a single sandbox usage or,
Always run in sandbox.