I see a lot of outstanding Hba1c values around here, how?!

As the title suggests, I see a lot of very nice Hba1c values (couple of 5s and 6es) in people's flairs around here. Is this normal? Because my doctor's are happy with 7 or 7.5. I have had diabetes for 23 years and never any complications, but I'm still young (24) so I worry sometimes about the future.

How do you people with these great values achieve this?! I assume a CGM? Here in the Netherlands healthcare won't cover them ( what B.S. ) and I'm not looking forward to spending the 5k a year on it myself, I only just got a job with entry loan..

I am thinking about trying out open APS, that's sounds interesting. Not sure my doctor's are going to like it though...