The easiest way to see where charging points are located is on Google maps. Just search for ‘Charging’. Note that, as well as the location, it will list which plug types are available.
Although CCS is now the common standard, some only offer Type 2, CHAdeMO or Tesla proprietary plugs.
The exact locations of charging points may leave something to be desired, as they are often at the far end of car parks.
Unfortunately, at present, each network has their own App or card.