The AI answer is hilarious. First they get all po faced that the mince beef must be 90% lean then cheerfully recommend a carb laden whole grain bun!

Unless you have issues with eating fat I'd recommend going for a mince with a decent amount of fat as the lean versions can be be a bit dry.

Make your own burgers - that way you have control over any carbs.

Use lettuce leaves instead of a bun for even lower carbs or bake some low carb fibre rolls which only have about 3.1g carbs per 100g.

OK. In the grocery stores around me, you can buy hamburger rolls that are lower carbs than others and they're good. You just need to spend some time reading the labels. Just remember you need make sure to plan those carbs into your meals for the day just like you do for everything else.
P.S.They freeze well.

I would eat Hamburgers just not that delicious bun. Being diabetic your already limited

Lean ground beef, but the carbs in the buns are bad

I make my own burguers using a very lean beef and low carbs or wheat buns.