Open App Exit Profile to run tasks if App A exits, but not if Apps C or D or F are still running

using Tasker with Autoinput

There is an App A

Have created a list of tasks linked to a profile, which clear the App A from Recents/Overview screen by autoswiping it up and killing the app. The profile is Application Exit profile for app A.

Each time I exit the app A, it is successfully cleared from recents and also killed.

Problem is that when using the App A, in between if a clipboard app is opened or a pdf viewer is opened by the app to view a pdf file present inside the it or I try to share a file from inside the app, then the tasker thinks this as the main app has exited and thus runs the task and thus clears it from recents an kills it.
So I am unable to use the app fully.

So I wanted to run the tasks on Exit of App A, only if App B, App C or App D are not running.

Tried pgrep shell command,but was unsuccessful.

would really appreciate any advise on this problem.

thank you in advance