Doyoulikelewds

Well, the files are still there but, i have to add them all over again. So i modded Skyrim a few months ago when Skyrim SE was uninstalled from steam and when i opened Mod Manager it said something along the lines of Skyrim SE not found or something but decided to ask me to make a new instance from another game installed in the PC. So, any tips on restoring the mods or Instance?