help

pretty sure it's Sword Art Online - Aincrad: http://www.mangago.me/read-manga/sword_art_online_aincrad/

Then it goes:
Fairy Dance: http://www.mangago.me/read-manga/sword_art_online_fairy_dance/
Phantom Bullet: Not on mangago, but you can buy it on Amazon or watch the anime
Calibur: Not on mangago, but you can buy it somewhere I think
Mother's Rosario: Not on mangago, but it's probably on Amazon
Alicization: http://www.mangago.me/read-manga/sword_art_online_alicization/
Sword Art Online - Girls Ops: http://www.mangago.me/read-manga/sword_art_online_girls_ops/ (this one is like a side story about girls)
Progressive: http://www.mangago.me/read-manga/sword_art_online_progressive/
Alternative Gun Gale Online: http://www.mangago.me/read-manga/sword_art_online_alternative_gun_gale_online/
Kirito's Thousand and One Night Story: Not on mangago, it's somewhere else (short side story)
Hollow Realization: http://www.mangago.me/read-manga/sword_art_online_hollow_realization/
Ordinal Scale: http://www.mangago.me/read-manga/sword_art_online_ordinal_scale/

I just looked over it and even I feel that it's confusing lol so I wrote explanations:
Fairy Dance - part of the main storyline, right after Aincrad
Phantom Bullet - part of the main storyline, right after Fairy Dance
Calibur - side story set in the game in Fairy Dance
Mother's Rosario - side story set in New Aincrad (this is something that happened at the end of Fairy Dance)
Alicization - part of the main storyline, right after Phantom Bullet
Girls Ops - spin-off based on some female characters in the series
Progressive - retelling of Aincrad
Alternative Gun Gale Online - spin-off set in Gun Gale Online, Phantom Bullet's game with new characters (no Kirito, Asuna, etc.)
Kirito's Thousand and One Night Story - same as what I wrote in parantheses
Hollow Realization - based on the actual game, with a new VRMMO setting
Ordinal Scale - adaption of the movie, set after Mother's Rosario and before Alicization, new game

thank you so much I tired to figure it out but then I just got confused on witch on I have already looked at :)