Putting this as kindly as I can…I really can’t figure out what it is you are trying to do as your posts are difficult to follow and since I think it likely that you aren’t here for a critique but rather for praise I will just note a few things in general and then leave you to whatever it is you are doing.
First, if you are trying to create a new gravity theory it must still reflect reality. In the real world you cannot exceed the speed of light and you cannot increase mass infinitely. If you are, rather, just attempting to show that Newtonian physics is not internally consistent you must still deal with the theory as it is, including its boundary conditions. General Relativity does not refute Newtonian mechanics it expands it so that if Newtonian Mechanics is invalid then so is General Relativity. Therefor you have to include the two limits I noted in the other post. If not then you aren’t working with recognized physics. You aren’t permitted to make up yourself how physics works.
Also, while circles with radius of infinite size are possible in math, along with many other things, they do not exist in the real world and even if they did it is moot as this could never be observed. How does one measure such a circle?
I would also point out that in your description you have a mass in a curved, actually circular, orbit which is not orbiting anything. Actually including a mass to orbit makes all the things I pointed out previously even more problematic. Unless you feel an object can act this way.
Another point is that I did not say
1 billion was an infinite quantity. You posted a couple of times how you could do math on finite and infinite quantities. So I gave you two examples of a finite number divided by an infinite quantity. To make it easy on you I used 1 billion in both examples for the finite quantity and I provided you two different “infinities” to use. You just posted something that I did not really say and ignored the calculations that, according to you, are possible. Why didn’t you do the calculations? They are not possible to do, that is why.
Lastly, I don’t know what physics you think people use today when dealing with gravity but I have found it to be Newtonian physics. When determining everything from the load on a truss to the necessary “stickiness” of a tire tread, to determining the dynamics of the vehicles in a fatal accident Newtonian physics is used.