Hi
@Duyen welcome to the forum, hopefully with the wide array of knowledge and experience that the people on here have, you may be able to Google less and get good advice, suggestions and information that will help you address you with regards to your Diabetes.
In terms of diet, lots of people on here have moved to a low carb diet, this may not be necessary for you dependent on your HbA1c but, for example, my original HbA1c was 86 and is now down to 46 some 9 months later based on my exercise and low carb diet. When considering diet remember that the issue is carbohydrates as a whole and not just sugar. Reducing your consumption of potatoes, pasta, bread and rice will likely have a positive effect.
If you want guidance on your diet then the
Freshwell Low Carb Project provides lots of information as well as recipes for low carb meals and snacks. Other useful sources for food ideas are the keto recipe sites that abound on the internet. You may need to discuss with your medical team if there are any considerations if you are on medication.
Feel free to ask any questions you may have, there is no such thing as a stupid question and someone will always be along to provide an answer.
Everyone's journey is different and that is also true of what work for you from a diet perspective. If you don't already do you may want to consider a blood glucose monitor using test strips and a lancet to finger prick to check your blood, before you eat and two hours after a meal, that will help you see what foods are good or bad from a blood glucose perspective.
Finally, read through some of the posts and the LearningZone is also a great place for information.