How many power outlets are behind the TV?

You are right, that definitely doesn't hurt!

In the house, we want to have the TV on the wall alone via a swivel wall mount, so without a TV wall.

A small note: many current TVs have the speakers facing backward. Without a reflective wall behind, they do not "work". This should perhaps be considered when using the swivel mount.

Small hint: many current TVs have the speakers facing backward. Without a reflective wall behind them, they do not "work". You might want to keep that in mind when mounting with a swivel.

Oh ok thanks for the hint! I have to give it a test listen! Otherwise, a soundbar will just be put in place! XD

6 sockets, 2x LAN, 2x SAT, in the low board there are another 2 sets of triple socket strips, 1 cable duct from socket height to TV height. Xbox, PS 4, Switch, AV receiver, Sat receiver, TV

Well, that sounds like a reasonable setup.

This is what it looks like for us.

In the floating TV board, recessed are:
2 x TV (in one box)
2 x CAT7 Duplex
7 x sockets (theoretically all individually switchable)
Speaker cable connection for 5.1
(Cable duct 10x6cm from board behind TV)

Furthermore, I have just laid speaker cables into the wall there + power for the subwoofer as well as sockets for vacuuming on the right and for the Christmas tree on the left