Red was my first Pokemon game. I got in the late summer of 1999.
A timeline?
1999 - Pokemon Red, Blue, Yellow (Red was first. I know I got Blue at some point, too, and got Yellow for Christmas in 1999)
2000 - Pokemon Gold, Silver
2001 - Pokemon Crystal
2003 - Pokemon Ruby
2008 - Pokemon Diamond
2009 - Pokemon FireRed
2011 - Pokemon HeartGold
2012 - Pokemon Black, Black 2 (Black 2 MIGHT have been early 2013, IDR)
2013 - Pokemon X
2014 - Pokemon Omega Ruby
2016 - Pokemon Sun
2018 - Pokemon Ultra Sun
2019 - Pokemon Shield
2022 - Pokemon Legends Arceus, Pokemon Scarlet