Is there any other wall to put the TV on in this room? It would look so much better over a console cabinet than it does over the fireplace. And it's too high for comfortable viewing at that height.
Please give us a measured drawing of the room and another photo or two to work with. We always have ideas.

Pics of the whole room are nessessary if you really want help. I will say right now there is no place for storage

I willing get the measurements for the room and post it but you’ll see this room was terribly built!

I’m not a fan of either! Montreal Canadian!!! :)

First, clear everything but the TV off the mantle and adjoins wall, including the shelf. If the TV HAS to stay there, move it over to the far right side of the fireplace.between the left wall and the TV, mount shelves, the brackets and shelves painted black or dark charcoal. The shelves are for electronic devices. Buy cable channel at any big box hardware store, to cover the cables down to the mantle, and paint it the wall color. Guide the cables down the left side of the fireplace, you can use the channel for this as well. Do not worry about decorating the mantle, the TV does that. Move any wall art on the wall perpendicular to the fireplace over so as not to crowd the space.

if keeping tv there, center it.

add matching shelf to left same height & width & level

Please post some more pictures

Where the cage is we have a 3 seater sofa that will go there

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Well OK, a Habs fan is good....at least it is a Canadian team!

I think whoever designed that room did you no favours. Where did they ever think you were going to place furniture?

Is it at all reasonable to have the TV on the wall where the bunny cage resides? Looks like your front entry way right behind there. It would be better if that half wall were a full wall but likely you won't want to change that.

So, if the TV has to stay where it is, does it have to be as big as it is? I know, it's sometimes hard to see the puck on a smaller TV and in my house, that would be a crime to suggest a smaller TV.

But I think you could benefit from a swinging arm mount for the TV. I'd consider putting it on the wall perpendicular to the fireplace, if there is space. Or at least on the wall where it is now, but telescoping enough so that you can pull it out away from the fireplace to watch and get a good angle from where your couch is. It can sit flat against the wall when not in use.

As for the audio/video components, someone else above suggested moving them off the mantle and getting cord conduit and I agree. It just looks too cluttered and if the TV has to be there, then let it be there and nothing else. A nice cabinet to hold the components and hide the wires as much as you can or at least camouflage them. The cabinet could go on the wall where you have the prints of the two moose heads.

And get rid of the shelf on the wall that has the component now as it just looks out of place and makes the TV sit off-centre as well.

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So, are you getting rid of the sectional in favor of the 3-seater?

Thank you for the suggestions!

A smaller tv would be a crime here as well! It is currently on a telescopic stand and we pull it out to watch it

We are adding the sofa in addition of the sectional just because we are 6 in the house and often have people over.

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If lift the tv up then possibly there's enough space to put a long box same color as wall or black same width as tv under. Then put cables & equipment in it. Then put decorative items on both sides of tv or art.