Can't adopt sd card?

So i had serious memory issues, like out of my 8gb 5.2gb was used for system data and 1gb for the default apps so i barely had room for ads , so i bought an 16gb sd card but i couldn't move all of the apps i barely could do anything on them(i dont really take photos/videos so they didn't take more than 10mb maybe). I didn't even have space to get the marshmallow update but i did some reading an apparently in the update i could adopt my sd card as internal storage and the only con was like slower speed but i don't really care for that myself. so i did a factory reset i updated to marshmallow erased my sd card memory before factory-resetting and when i finally opened the phone with 6.0 installed and went to my storage options and in sd settings all there is is eject and format, not format as internal storage, help??? also excuse me for horrible grammar/punctuation.


Right now after resetting i already have 6.2gb used out of 8gb and i didn't install one single app its all just after resetting.


Phone:Lg spirit 4g LTE(device wasnt in the main lg device page), android 6.0(marshmallow)