Here’s my idea: manage the cables.

You don’t need ideas, you just need to start.

You could start by actually trying first.

I can’t get the cables looking good

It’s because you plan and do cables in the early stages, not in the end stage, if you ever want it to look good.

The only thing I can think of now:

Powerful golden spray paint on all cables. Make it shine, make it look like it was all intended like this.

I would say at this point any type of management would be good lol

Cable raceways. Just stick em to the back of your racks, or on the bottom of the shelves and run the cables through em. You might need some you can stick to the wall, if you want, to run cables to the TV. You should also mount the power strips on the shelves, probably the lowest shelf. You can use one if those boxes that conceal the power strips, or use one of those under desk mounted shelves the’that you can put the let power strips on. Along with cables and stuff.

Some of the cables need to be longer to not have that effect where they’re being pulled against their own weight.

Then, lean into it: https://www.instructables.com/Maximum-Wire-Management/

Looks fine to me.

Move the pc next to the shelf.

Move the sub under the tv.

Get surface mount cable runs and go down from the tv to the floor, over to the shelf, and up along the side of the shelf.

Do you have attic access over that wall? A really long HDMI/RCA could go from behind the TV into the wall, up to attic, skip a few studs, then down to a brush faceplate behind the consoles

Aye, it’s a fucking shit show alright. Hide the cables behind some low wooden shelves under the TV and put all the devices on those shelves (drill holes in the back of the shelves for the cables to go through). Otherwise stick that big black hairy god-awful pimp carpet over the whole lot of it and velcro it to the wall. Also, you need to get a good plasterer. That back wall is a fucking disgrace.

Effort?

For real though, get a roll of Velcro and start there https://amzn.to/3R91Sqd

Like this is very bad, not even trying. Start somewhere, then ask for alternatives.

Not sure if it’s an option for you but, make a cabinet hidey-hole thing on the other side of the wall, run cables through wall and plug in somewhere over there, profit. That is, hide the mess somewhere else.

Entertainment stand/cabinet thing under the TV.

You could be artsy about it and attach the cables to the wall in straight runs with 90s, but the execution of that is harder.

Swap the red LEDs for blue, should tie the whole room together.

The wall plate is a great idea if you don’t mind cutting holes in the wall.

Honestly, I’d grab a couple of acoustic tiles to put on either side of the TV and chuck all that shit behind them. Maybe cinch up and ziptie anything I know doesn’t need to move for a while.

Assuming you can cut into the wall… This is likely the cleanest option without doing electrical work.

https://www.homedepot.com/p/Commercial-Electric-Flat-Panel-TV-Cable-Organizer-Kit-5623-WH/305090874

If that extension cable jump isn’t up to the electric code they do make something similar where you can tie it into the hardwire as well. It doesn’t look like you have an outlet in the same stud section though. Which would make that harder.

Any remaining cables horizontally I’d just stuff in something like this above the trim at the bottom. You’d probably want to either source a black one or just paint it to match your walls.

https://www.homedepot.com/p/Commercial-Electric-4-ft-Flat-Screen-TV-Cord-Cover-A31-KW/304502793