I'm afraid it is not just junk food that is the problem and many people feel they have a healthy diet but sadly it is not if diabetic as it is too high in carbs. Things like rice, pasta, bread regardless of colour are high carb as well as potatoes, breakfast cereals, pastry and tropical fruits like bananas, pineapple, mango.
An HbA1C of 63mmol/mol is quite high (the threshold for diagnosis is anything over 47mmol/mol) but not as high as many. However at that level I would be surprised if your GP wouldn't want you to start mediation especially as you may struggle with eating foods which are low carb like meat, fish, eggs, cheese, dairy, vegetables and salads and fruit like berries since you say you don't like them.
There is good explanation in this link which is for a low carb approach, you may find some meals in the menu plans which may suit you or which you can adapt.
https://lowcarbfreshwell.com/
As for drinks, dry wines and spirits with diet mixers are usually ok in moderation but as it is likely to be hot at that time of year plenty of water and diet drinks.