Try not to stress as that can affect your BG negatively also, if you are hungry - eat, there’s no point in making yourself miserable as it’s a long term way to eat and has to be something you enjoy, I do keto which is 20g carb a day - you may be able to manage more carbs which is why it’s best to have a metre to test how foods affect you -
so what I eat
All meats with the fat included, chicken,ham, beef, lamb, pork, bacon, high content sausages, salmon, smoked salmon, eggs, some cheese, a bit of cream, butter, above ground veg, especially cauliflower - can be mashed, riced etc to replace potatoes, celeriac is one good below ground veg you can eat, great cubed & roasted, green veggies, mayo, avocado, a few berries, 85% chocolate a couple of squares, sugar free jellies, Greek yogurt, pork scratchings, check the carbs that are in everything.
Take your time to get your head round it it’s not a race and as long as your on a downward trend BG wise what you’re doing will work
For my dinner tonight I had roasted harrisa salmon with a few green beans & asparagus flash fried in butter & olive oil with 3 cherry tomatoes halved and a blob of mayo, and 2 squares of 85% choc - as you get to grips you can more inventive with your food, have a look at the two what have you eaten today threads for ideas, I’ll post the links to the threads for you