Replacing concrete patio around a built up in-ground pool

[squishers]

I just bought my first home and it has a rather large pool in the backyard. It is an IG pool but the pool is built up about 3 feet off the ground. I’m assuming they did this to allow for the 10 foot deep end being so close to sea level they couldn’t go that deep into the ground. There is an about 3 feet of concrete patio around the pool (it’s quite narrow) and there is quite a few of cracks throughout different spots in the surface of the concrete. I’m wondering what is my best option for fixing the concrete around the pool? Is it safe to remove the concrete patio and replace it with the pool being built up out of the ground? I’m afraid if I just resurface the concrete the cracks will happen again.
The pool was resurfaced recently and looks great, when I just redid all the pool plumbing we opened it up from the side to run new pipes and I noticed the sand/dirt had sunk under the patio about 4-6 inches & there are some rusted rebar in there as well.

I’m 26 and a new home owner so any knowledge info would be greatly appreciated!

 

[AQUA~HOLICS]

The best option to fix the situation is to completely remove the existing deck, while it’s removed the surrounding earth can be properly compacted so help prevent future movement of the new deck work.
Can you explain in more detail about the rusted rebar?

 

[squishers]

The best option to fix the situation is to completely remove the existing deck, while it’s removed the surrounding earth can be properly compacted so help prevent future movement of the new deck work.
Can you explain in more detail about the rusted rebar?

When replacing the pipes I noticed a few pieces of the rebar going across from the pool wall to the wall of the patio were rusted. I don’t have any pictures currently and am not at home until tomorrow.