Welcome...
You will find the help you need here.
One of the experienced helpers will be able to evaluate your logs.
One reason for Avira is that it is highly rated in reviews...
Google for it, and you will see just how effective it is as compared to others.
It is not that Kaspersky is bad....
just that Avira is a few % points better in effectiveness.
The techies may have other reasons as well...
(Maybe search TechSpot for discussions of Avira, etc?)