ok but how long before the end of support for free avast to avast one ?
on the site it is more difficult to download avast free. avast one is in main download
There has been no such decision reported (that I'm aware of), other than they are different products.
Other than the confirmation that this is a simplified interface suited to those who basically install a product and let it make the decisions.
You obviously haven't looked very carefully, on that same page under the Security heading is the link for Avast Free and Avast Premium.