So you have 8% out of range high and 1% out of range low, with 91% in range. What does your doc say?

In your graph 11.1 = 200. (random should be below)
5.5=100 (fasting should be below)
7.8=140 (2 hours after eating should be
below)

You have some highs on your chart but your estimated A1c is 6.5, which is not bad at all. Your average on the chart is 7.8 (140, a little high) so not sure how they got that estimated A1c. Your lowest blood sugar is 6.9 so again, that A1c estimate is hard to fathom.

The A1c averages blood sugar so highs and lows are averaged and the result can be misleading. But with only 1% lows, the A1c should be pretty much on target.

The most helpful thing is to see the daily patterns over a few days. Can you wear a CGM? Is a doc following you?