crack flange

I was replacing a toilet in one of my upstairs bathrooms. After removing the wax ring, I noticed several cracks on the toilet flange as shown in the picture. There have been no leaks, to my knowledge, possibly due to the wax covering these cracks. I know taking this flange out may not be an easy...

As mentioned in the title, the toilet in the basement has been removed since we are trying to find out why and where is the leaking from... Issues here: 1. Uneven Flange 2. Crack 3. damage drain pipe (in the cement/ dirt), top-view to see the bend on the pipe Need suggestions from here, I am...