The second symbol, I needed for my first schematic on v5.1.2, was of the universal 4-pin telephone socket/jack. It accepts the telephone 4-pin plug in order to connect the house telephone set to the phone line. Once again, I have no choice but to draw it myself as I did with the first symbol, I needed, which was a 3-digit 7-segment LED (to do it I had to erase by mistake the symbol of a 4-digit with which I started as a template ).
For instance, my first project on KiCad v5, is redrawing a DC volt/current meter which I did in the past in a couple of hours (from scratch) by using a very old KiCad version (BZR2356, dated 2010). Now, I expect it will take about a week (if I am lucky). Meanwhile I hope, during my learning stage, there will be no serious damages among the official files