Hi
@Jsphhlm and welcome to the forums.
I am sorry you are in such a dark place at the moment but I truly believe that it doesn't have to stay like that. I suspect that your depression may be affecting your attitude to your diabetes so it's good that you are seeing someone about that.
After 52 years of T1 and some periods of quite dreadful control (eg teenager pre glucometer when I injected fixed doses but ate what I liked) I am firmly if the opinion that sometimes T1 just doesn't want to play ball and also some people genuinely have metabolisms that are easier to balance than others. However, if you persevere and take help from wherever you can get it, things can improve. And no matter what complications you have, it's never too late to improve your control to slow them down and in some cases even reverse them.
In my case I always found things easier when I tested more often, so I strongly urge you to push your team for a cgm (continuous glucose monitor) if you haven't already got one. Also good record keeping does help to see patterns (yes, I'm bad at that).
As for diabetic clinics, some are better than others. I usually reckon that I know more about my personal diabetes than they do, so use their advice to suggest things that I may not have heard of. (And of course, all those essential T1 tests so that complications can be picked up early). I would suggest ignoring any bad attitudes, if you can. They may deliver it badly, but they do know a lot about diabetes in general, some of which may be helpful to you.
And diabetes technology improves all the time (I love my dexcom), lots of people love their pumps, so that's another reason to keep attending your clinic.
Personally, I found I had good control when motivated (eg during pregnancies) but tended to drift into bad habits (inject but not testing much) at other times. So if I got a "bad" hba1c at the clinic, I'd try a bit harder for a while and improve a bit, and then I'd slip into poorer control when I got a better one.
Investing in a freestyle libre (now replaced by a dexcom) made a
massive difference to me, because I could get immediate feedback on how my insulin affects my bg. And after over 4 decades of diabetes, it was only when I came to New Zealand that the team sat me down and explained properly about how to calculate things like correction and insulin ratios, everyone else had just assumed I already knew....
Good luck and lots of virtual hugs from NZ