Russian junk has been useless wherever it has been deployed since WWII.
Don’t tell it to USAF&USN. They lost 2300, ~800 jets and thousands airmen KIA to Soviet SAMs in Vietnam only.
S-series SAMs are extremely capable. Latest Patriot is actually built using earlier S-300 tecnnology evaluated by USAF since 1994.
Unlike in most other areas Russians has the edge in air defence. They are some 20 years ahead. They have deployed ABM since mid70s.