I cant upload worlds into my save file. the singleplayer world menu does not show them

i cannot see recently uploaded folders in my minecraft singleplayer world menu. to be more specific uploaded worlds in the saves folder do not appear so i cannot use them. it must be an issue with the single player world menu on my account because i have tried multiple fixes yet none have worked. i must have a problem with my connection between my minecraft internet account and the saves folder because my new worlds that i have pasted in that folder do not appear and the saves that i delete within the saves folder are still funcional in the sp menu. it is a one of a kind glitch that no one else has seen so far but me. this glitch also randomly occurred, meaning that all of a sudden this glitch happened to me. it has to be a problem with my account and i will probably require a new one in order to fix this bug. and this happens with all my minecraft versions not just 1.8.7. UPDATE: actually it was me messing around with singleplayer files in the wrong .minecraft directory. My Bad.