..load all this columns into single columns ...
Please explain what you mean by this.
In general, for every different file format, you will need a separate dataflow. Multiple files with the same format can use the same dataflow, often by using a FOREACH container to loop round those files.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.