My olive tree has had a rough time, its bark was being peeled off by the neighborhood cats, while I was out the country for work, and now it is infested with ants, I think they set base within the tree (see second last attached photo). Looks like it was massacred

I put chicken wire around the tree to protect it from the cats.
Any idea what's wrong with this tree? Can she keep going?
Please help.
Thanks in advance, much appreciated
Here are a few pictures (can take more if needed):