[29-06-2020_01-38-26] [WARN] scanModDir('C:/Users/gio/Downloads/xcom/xe/user/', 'mods'): No metadata.yml in openxcom_xfiles_1.4a, skipping.
[29-06-2020_01-38-26] [WARN] scanModDir('C:/Users/gio/Downloads/xcom/xe/user/', 'mods'): No metadata.yml in me_sound, skipping.
[29-06-2020_01-38-26] [WARN] scanModDir('C:/Users/gio/Downloads/xcom/xe/user/', 'mods'): No metadata.yml in Dioxine_XPiratez_L2, skipping.
[29-06-2020_01-38-26] [WARN] scanModDir('C:/Users/gio/Downloads/xcom/xe/user/', 'mods'): No metadata.yml in 40k_cutscenes_024, skipping.
[29-06-2020_01-38-27] [WARN] scanModDir('C:/Users/gio/Downloads/xcom/xe/user/', 'mods'): No metadata.yml in 40k_025, skipping.
Wrong folder structure.
You need to copy only the mods, nothing else.
For example Piratez folder contains tons of other stuff, you need to use only what's in Dioxine_XPiratez_L2/Dioxine_XPiratez/user/mods
Same/similar for XcomFiles and 40k.