Welcome to the forum.
Meals do not need to be complicated and basing meals on meat, fish, cheese, eggs, diary, vegetables and salads and fruit like berries will be just fine. By making good choices of the veg i.e. avoiding the starchy veg as well as rice and pasta and being careful with portion size of bread, and breakfast cereals and cutting out cakes, biscuits and sugary drinks including fruit juice. Things can be flavoursome without being spicy by using herbs.
I hope this link may help you pick out some meals you may like and which will be fitting in with the suggested no more than 130g carbs not just sugar per day.
https://lowcarbfreshwell.com/
If you have been prescribed metformin then I assume your HbA1C was quite high but it will still need a dietary regime with less carbohydrates.0/