Vintage elna tranforma sewing machine

This machine sounds great no rust and has been oiled down..this was my grandma sewing machine and for the like of me I can’t get the bobbin right ..idk if it needs a new bobbin case or I just don’t know what am doing ..this machine is beautiful and I hate I have to part from it but I can’t get the bobbin right ..I hope who ever gets this machine and knows about the bobbin issue enjoy it as much as granny ma did;)) Built in light Knee peddle Doesn’t comes with any foots are kneedles