Link to an interview on Youtube: https://youtu.be/Pi2ahyx3b7A
Do you only check in the morning or do you check before every meal/snack?
If it is your highest number of the day you could be dealing with the dawn phenomenon or somogyi effect. I was fortunate and my insurance partially covers a freestyle libre for me. I found out my blood sugar was getting way low at night (somogyi effect). Now I take 2 gummy vitamins before I go to bed and my fasting number has dramatically improved.
If you are new to this though don't stress about having the dawn phenomenon or smogyi effect right now. Focus on lifestyle changes with diet and exercise. Exercise doesn't have to be HIIT workouts either. Walking helps my all days numbers a lot.
Also check out the book Glucose Revolution by Jessie Inchaupse. I know a lot of people have success with fasting but my life and work schedule would make that so hard. The tips from the Glucose Revolution book helped me a lot.