In our country, everything was relatively simple and understandable. The Afghan government requested the entry of Soviet troops. Soldiers and Soviet people were told: we are fulfilling an international duty, helping a friendly people to get out of the darkness of the Middle Ages. And it worked. Most of the Soviet people respected the soldiers who had been to Afghanistan. ?
But the politicians of the late USSR, and in particular Gorbachev, turned out to be either traitors or idiots. Even if we forget about their deeds, which led to the collapse of the USSR, the question of Afghanistan remains very acute. Everything in the country was heading towards collapse, and the soldiers from Afghanistan were simply forgotten. So, after 1986, the state was unable to create a concept of assistance to veterans - (both wounded and those suffering from traumatic syndrome. You call it Vietnam, we have Afghan syndrome). The country did not repay many for their participation in the war.
In 1991, the USSR collapsed, small wars began in many republics. In 1994, Russia was shaken by the war in Chechnya. Against the background of these events, the veterans of Afghanistan became unnecessary to anyone. Yeltsin did not give a damn about anything at all, especially about Soviet soldiers. Only soldier's friendship helped many of them survive to this day.