assad was in the process of stepping down when the saudis invaded by stealth, with the attempt to prevent the transfer of power to a constitutional republic.

the propaganda around syria is really absurd; you have been fed a fantasy reality, and most of what you believe is probably false.

while the saudis ended up losing this war, largely because the turks pushed them back, the chaos in syria prevented assad from stepping down.

if the war is coming to an end, it is reasonable to assume that assad will quite quickly put in place the transfer of power that the war was intended to prevent - this time with russian protection.

so, if your primary consideration was the removal of assad, the russian victory will facilitate this, rather than prevent it.