Server-side datatable implementation: how to read the date in dd/mm/yy format from the controller for search

As the title suggests, I am implementing server-side datatable.

I am having a problem with the global search to read birthDate in dd/mm/yy format.

I can only read the date in y-m-d format (i.e. the default date of the db).

This is my code:

        // get data from user_dummies table
        $query = DB::table('user_dummies')->select('*');

        // Global Search
        $search = $request->search;
        $query = $query->where(function ($query) use ($search) {
            $query->orWhere('firstName', 'like', "%" . $search . "%");
            $query->orWhere('lastName', 'like', "%" . $search . "%");
            $query->orWhere('age', 'like', "%" . $search . "%");
            $query->orWhere('birthDate', 'like', "%" . $search . "%");
            $query->orWhere('role', 'like', "%" . $search . "%");
        });

I tried to write the code corresponding to the birthDate put below but I get an error from datatable,

i.e. DataTables warning: table id=datatable – Ajax error.

 $query->orWhere(date('d/m/y',strtotime('birthDate')), 'like', "%" . $search . "%");

Can someone tell me how to do this?