Easy!

When out for dinner, nibble on olives (not bread or breadsticks), then start with pate, just leave aside the toast or oatcakes that are served with it.
Assuming you are a meat eater, order a steak, or other meat or fish & enjoy with vegetables, just leave the potatoes.
If vegetarian order a dish with lots of protein (eggs, nuts, beans) & again leave the potatoes or pastry.
If an alcohol drinker, enjoy a glass of wine.
For dessert I always have a black coffee & a brandy. An alternative is the cheeseboard, eating just the cheese & leaving the biscuits.

When in a coffee shop/café with only baguettes/sandwiches/rolls, buy one (or two) and take out the filling & enjoy that with a black coffee or black or green tea. The filling ingredients (e.g. ham & cheese, or chicken salad, or bacon) actually taste much nicer when not consumed with cheap bread.

In general the low carb gorgeous food way of eating makes things taste much nicer.