That is not too disastrous and means you have not crossed that threshold into the diabetes zone, however it is a bit of a wake up call that you need to be reducing your carb intake. Many find that by doing that they can pull things back before it is too late.
Have a look at this link which has some good explanation and may highlight where you have been going wrong, there are some do's and don'ts and some meal ideas which may offer you a way forward.
https://lowcarbfreshwell.com/
Low carb does not mean NO carbs but it is suggested that no more than 130g carb (not just sugar) per day is a good starting point.
Keeping a food diary of everything you eat and drink with an estimate of the carbs will help you see where some savings could be made to bring you down to the 130g per day.