If you use one of the online apps that count calories and carbs it is quite easy to see what the numbers are, like skywalker says it is worth having a look.
I usually have a few berries with yoghurt but if I feel like a satsuma or an apple I have one. They add more carbs but I can then adjust another meal.
Most people stay low, often lower than 30g. I don’t go as low personally and can be anywhere between 30-60 but usually in the middle. I find it useful to play with my fitbit app before I decide what to make for lunch etc by putting in and taking out different ingredients until it has the numbers I want for that meal.
melon and pineapples, bananas are all high. I fancied a banana the other day but when I looked at my app it was 27g carbs so I thought better of it.