You can have to create manually the directories in your Saved Games ....\Mods\aircraft and ....\Mods\tech they don't exist at installation of DCS :smilewink:
I prefer OvGME to mod my DCS, OvGME (may be JSGME too) make backup of original folders to restore them when uninstall a mod.
Edit: https://forums.eagle.ru/showthread.php?t=182827&highlight
Edit_2: link for OvGME https://github.com/Have-Purple/ovgme/releases/download/1.7.4/ovgme_1_7_4_setup_64.zip