There are plenty of post and apps on google searches that show how many carbs any given food has. You can weigh an apple and search on your phone and quickly find some info on how many carbs an apple in the general weigh yours is will have.
I tried all the different verities of frozen mixed vegetables that the local food stores carry. I quickly learned to avoid the ones with onions. The best one I found is sold by a local chain called Shop-n-Save in there generic brand called Essential Everyday and the particular mix that taste good and is low in carbs is there Fiesta Blend. It has Broccoli, Carrots, Navy Beans, Kidney Beans, Garbanzo Beans, Green Beans, and Red Peppers.
Another good food with basically no carbs is egg white (Bob Evans is the best but the most expensive, some generic brands are OK, some have water added that will show up when you cook it). I buy the cartons of it and cook up 100 grams for breakfast, and also have 50 grams of blue-berries, 160 grams of low acid orange juice, and a Dannon light and fit yogurt. That makes up a filling breakfast that holds my over for quite a while and is low enough in carbs.
A good light lunch is a hardboiled egg, 50 grams of blueberries, and 160 grams of homemade ice tea made with only 85 grams of sugar in an 89 oz container filled up with the homemade Lipton tea.
A good mid day snack is a medium size apple, or a RX Coconut Chocolate bar, or a Kind Carmel Almond bar. But only one from that list per day.
A good light supper is 200 grams of Amy's brand black bean chilly, and 160 grams of steamed Fiesta Blend mixed vegetables, a Dannon Light-n-Fit yogurt, and for a snack the salted taste of 10 grams of Planters Cashews, 10 grams of walnuts, and 5 grams of sliced almonds with a tall glass of cold water.
On days when I do a lot of work I will have one slice of Pepperidge Farms 15 grain bread with 52 grams of Skippy peanut butter, and 177 grams of cherry Pepsi, with a half a banana, and one premier chocolate drink.
A good low carb before bed snack is 60 grams of large curd 4% cottage cheese with a generous amount of salt mixed in, and two slices of peaches weighing between 30 to 40 grams (from a jar).