Welcome, @Daniel_Patrik, to the club that no one ever asks to join - and welcome to TuD!
You’ve come to the right place looking for information, yes, making diet and lifestyle changes will certainly help improve your situation. Did your doctor put you on any medication or make other recommendations to help normalize your blood glucose?
As far as “reversing” Type 2 diabetes, it really matters what you think that means. Many people have been able to reach a point that their blood glucose remains in the normal range via only diet, exercise and lifestyle changes; however, it is important to understand that those changes have to be long-term: If you go back to the way things were before, the improvements will disappear along with all the risks. Know also, that for many, diet/exercise/lifestyle is not enough - medication is required - and even then, in many people Type 2 diabetes progresses despite attempted interventions, requiring more aggressive therapies. Be sure to remember that being unable to “reverse” Type 2 is not failure, and does not mean the efforts were worthless - it could be just the nature of a particular person’s diabetes.
Your diabetes is not my diabetes - every one is different. For some a Low carb or a very low carb diet helps. Some people need more carbs, some more fats, some more proteins. Variations on a Mediterranean Diet work well for some and not others. Some do well on a Paleo diet, some on a Vegan or Vegetarian diet. You will need to experiment to find what works best for you.
Folks here will happy to advise, encourage or just listen - whatever works for you.