Carbs? There is a limit? I had no idea

Hi I have read a few posts now that some are dumping on carbs? Is this true? I thought sugar was the issue but now that I think about it carbs turn to sugar right? Maybe this is why I am dizzy at times? I eat quite a few carbs I better slow down what is the magic # and why in the heck did'nt my doc tell me this? hmmm Jess 350/260/150

I stay well under 60 grams a day.

I was also told that stay under 60 grams

My doctor and dietician say to get 80g of protein and 80g of carbs every day.