Which LAN cable for my Ps4 Cat 1 Cat 2 Cat 3 Cat 4 Cat 5 Cat 6 Cat 7 Cat 8? Or would you prefer something cheap and normal?
Does not matter. Cat only stands for safety. Just search for 1000 mbit cable
Cat 5 / 5e is usually sufficient for a ps4
but cat 6/7/8 are not much more expensive and usually more stable
Nowadays you can no longer buy Cat 1 to Cat 4 as a network cable. Cat 5 or Cat 5e is completely sufficient. Cat 6 is ok, but oversized. Cat 7 and Cat 8 are worthless because only the cable, but not the connector, can reach these categories. A Cat 7 or Cat 8 cable with the usual network connectors (RJ 45) also only has Cat 6. Cat 7 and Cat 8 are a waste of money.
Ultimately, the cable is completely uncritical. Everything that is commercially available can manage 1000 Mbit / s (not 1000 / mbit, that's nonsense) over 100 meters.
Cat 5e can already do Gigabit Ethernet. If you have longer distances (> 10m) you could maybe use Cat6. What else is not worth it.
Cat only stands for safety.
Security against what?
What you mean are the protection categories for multimeters, etc… From I to IV. But there are also the Cat specifications for network cables for different generations / speeds.