After a local selctive sync all local copies disapeared

hi there

i have synced a folder with local selective sync and it has not kept a local copy.
i can see the files are on the cloud but they are no longer on my hd where i need them…
i must have a local copy - i just wanted to have a “backup” on the cloud.

help on a quick fix it asap - i’m panicking…

will this work?