Even Russian historians fully credit Reagan for driving the final nails into the coffin of the Soviet Union. You should follow their lead instead of attempting to re-write and deny history.
Russian historians? I'm sure there is one or two who makes mention of him favorably. Please give a name though? Reagan was out of office when the wall came down and a lot more had to do with Poland & Lech Walesa. Regan was not insignificant, he was pally with Gorbachev and that helped but the St. Regan revisionism is bullshit. The US contributed a lot of pressure but constant intellectual & propaganda pressure from the various European nations should be credited for a lot. Would Regan have stayed the course without Maggie for example?
Regan was the visibly aged leader of a lame duck administration clouded by scandal and corruption, Iran-Contra in particular when he made the tear down the wall speech. Which was not very well covered in the global media as he was a senile joke to most of the world at the time.
One could credit Carter for sneakily letting the Russians into Afghanistan unopposed

They bit off more than they could chew there and that demoralised them greatly. Or you could say point out what stupid fucker(s) sided/funded the Mujahedin, setting up the Taliban..
My girlfriend's grandfather back then was involved in you name it military programs from the 50s thru the early 90s. He worked at area 51 for years (allegedly)

. The events of 1989 were a surprise to them and they were the spook's spooks.
I understand the attachment to the 80s as you guys got to wallow in greed but get real crediting Regan so much with the collapse of the USSR. The Soviets had a large part in their own demise, Brezhnev the fault much of this.