the events of The Terminator 1984 and Terminator 2: judgment day 1991 is now timeline 1 then they blew up cyberdine in 1995 and created timeline 2 where judgment day is now 2004 not 1997 then the events of terminator 3 and salvation took place then in terminator genysis they follow events of the 1st terminator movie but there are some changes like
Upon arriving in 1984, Skynet's T-800 is disabled by Sarah and a reprogrammed T-800 Guardian sent from an unknown origin to protect her when she was nine years old; Sarah has nicknamed the T-800 "Pops". Kyle arrives a short time later and is immediately attacked by a T-1000 Sarah and the Guardian join Kyle and destroy the T-1000 using acid. It's revealed that Sarah and the Guardian have constructed a makeshift time machine similar to Skynet's, and Sarah plans to travel to 1997 to prevent Skynet from becoming self-aware. Realizing the timeline has been altered, Kyle is convinced that the future has changed due to the warning he received in his childhood vision. He persuades Sarah to travel to 2017 instead to stop Skynet. sarah raised by pops in 1973, visions of kyle reeses kid self, Matt smith is skynet, john conner is a terminator
which created timeline 3 and erased the 1st 2 timelines for good and the events of the 4 terminator movies never happened ever so im really confused why count the events of The Terminator (1984) Terminator 2: Judgment Day (1991) Terminator 3: Rise of the Machines (2003) Terminator Salvation (2009) Terminator Genisys (2015) happend in 1 timeline and i woun"t be confused? why did all of the events of the 5 terminator movies get split into 3 timelines ?