Do you people realise that any weapon which gets crashed gets analysed thoroughly to see what tech has been used and how electronics are?
Russia was not expecting much resistance from Ukraine so it's naive to think Russia used it's advanced tech in this war
Infact, from reports of analysis of most of the stuffs like crashed missiles it was revealed that most of the equipments either belonged to 1990's or belonged to the west and got exported to Russia after 2014 despite sanctions being there on Russia since it's Crimea invasion.
This is important because it indicates that Russia used weapons made by tech from west on Ukraine