It really isn’t as hard as it looks.
Get Grasshopper from here
Install it (you may have to restart rhino) then type in “Grasshopper” into the rhino command line.
You will also need ghPython for my script here
Download one of the codes posted here then open it up in grasshopper.
Double click on the Galapagos component (up the top in both cases above), go to the “solvers” tab and click “Start solver”
You will need to stop it once you are happy with the results. All the parameters used to create the ellipse will be visible in the GH window. Alternatively you can rt click on the python component and select “Bake.” this will add the ellipse to the document.
Many people on this forum have taken their time to help you with your myriad problems, creating custom code when there is no “easy” pre built solution. We are more than happy to help, but as they say, we will help you if you help yourself!
Take a little time to try and understand how these methods work and it will help you immensely in the future.