From a first look you need to rework your file naming.
Your current folder structure will give Plex the creeps…
S:\
Serveur HDD 2
Serveur HDD 2 - Tv Shows (ENG) (1080p)
Marvel's Hawkeye (2021-11-24) (1080p 10Bit H.264 5.1 AAC)
Marvel's Hawkeye S01
Hawkeye S01E01 Never Meet Your Heroes 1080p.mkv
Try following the official naming schema instead:
S:\
Serveur HDD 2
Serveur HDD 2 - Tv Shows (ENG) (1080p) <- folder linked to your TV Show library
Marvel's Hawkeye (2021)
Season 01
Marvel's Hawkeye (2021) - s01e01 - Never Meet Your Heroes 1080p.mkv
I also recommend you do a full Plex Dance to ensure Plex is picking those files up correctly and to avoid confusion due to some of your previous names.
https://support.plex.tv/articles/201543057-why-is-some-of-my-content-not-found/