My first football experience was on NES, as I had it when I was on kinder garden, with games like Tecmo World Cup and such though wasn't something special that made me feel about it. The only one from NES that stayed with me back then in my memory as a kid (even if it counts as a cinematic version of football) is Captain Tsubasa, especially the Volume 2 Super Striker with all those special moves, music and that ambience that was exactly like in the cartoons. Loved that one...
From then onwards my games were straight on PC, my first technical football 3D game was Striker '96 for MS-DOS on my first Pentium. I was blown away back then seeing a 3D game rendered so nice on a CRT with those pixelated graphics and presentation. Was my first contact with football via keyboard and mouse.
Then, my first serious relationship with football gaming started with FIFA RTWC '98 when my parents purchased me my first Pentium II 233 MMX. Was the first football game that expanded so much the initial lineup of teams and clubs, playing and trying to qualify with Maldive Islands or whichever national team in the world through the world cup, plus playing with clubs in domestic leagues. The edit mode was so extensive. Later of course I enjoyed a lot and invested even more of my time on FIFA 99 and FIFA 2000 that I also have fond memories. The 3DFX graphics was a thing, and those looked and played spectacular back then.
I still play a bit of those titles from time to time via DosBox Staging and PCem. Such great memories regarding football and gaming with family and friends...