Hi,
so sorry that your Pancreas and you have been struggling. I hope you can get some great advice and or something that helps you very soon. It must be soooo tiring.
I am not a Type 2 and have only had v high blood sugars when I was originally diagnosed many years ago, so sorry I can't advise you much about those, except to say keep asking everywhere for help and that it is really OK to do that, even though it can be hard for some of us

But, I have had some experience with the Dexcom 7
That system may work with many people, but it did not work for me. I am very much hoping that it has changed in the last year, since I tried it. I really hope it works and that you get lots of different peoples experiences with it, so you can make an informed decision.
For me, there were problems with communication between the sensor and the pump in both directions, very dangerous for some of us! And there were problems with the App. Being an ex engineer, at one time in desperation, I wrote to the company and asked whether they had actually tried these out with people who actually had diabetes ! As the communication set up and the frequent loss of connectivity between all parts of the system were appalling. Not only that I was spending valuable time trying to make them all connect up, changing positioning of sensor and cannula inserts and off loading and reloading the app ( and therefor a new sensor). No fun for someone who has no warning signs of low blood sugars.
Diabetes is enough to manage in itself with equipment that can be faulty, intermittent, inconsistent, too complicated to operate, and inappropriate for use. I never heard back from them I wonder why
You also only got one sensor with the supply of inserts ( I really hope that has changed). If that sensor goes then that box of inserts is useless and if you are having to pay for them that is awful. Bad enough that here in England the NHS ( probably politicians actually) contracted Dexcom to provide a lot of these closed loop systems to patients who need continuous blood glucose monitoring.
This was just my experience, but I have had diabetes a v long time and have been one of the first to have tried new treatments and I know when something isn't as good as it should be, for me.
I use the Libre 2 at the moment and it has been pretty reliable except when the App went down......big sigh. You use it so you know about it.
I hope you get some more comments on here before you make up your mind.
All the best
Riggs