How about a curtain wall behind the TV and cabinet? Hang simple, lightweight curtains on BASIC hardware that can be bent to the angle of the walls. Those in the mockup below are standard length, but you could probably find the longer floor to ceiling length as well.

Items of furniture should never be at an angle in a corner. Find an appropriate wall for your TV.

Wow. I have none. Thanks for your 'help'

Try placing the media console flush along the back wall but keep your TV on a slight angle - I think this would be the best solution using what you currently have assuming that you will be able to see the TV with your existing furniture arrangement. The wall space on the left will then be more open to hang prints/artwork.

I have no trouble with the angle, but I wouldn't hang anything above it. Not all space has to be filled, and TV walls are inherently busy, with plenty to look at.

Your family thanks you for placing the TV at a good viewing height for everyone.

Some ideas

I think you could fit it flush against the wall and then put a swivel thing under the tv?

Maybe add crown molding?

^Maybe add a built-in like this corner piece shown above?

^Or something smaller like this one?

^or have the TV on an articulating arm.

Place the TV about 4” higher than it is on a levitating arm. You’ll feel like the wall is more balanced and you won’t lose any functionality

Did you try pulling the cabinet forward and then angling the TV, rather than pushing it back. I'd then add a piece of artwork on the wall, or shelves - depending upon what's on the other side of the fireplace.

Mount the TV on a swing arm, and use hidden wiring.

Learn to love the serenity of the empty space. Seriously, not every wall needs decor. With the fireplace right there, it’s already a bit crowded, and any more stuff will make it more so. If you must have something, have a carpenter build you a floor to ceiling cabinet/bookshelf, and mount the tv there, on an articulated arm.