YANBU to feel like this, but YABU to say it's not worth it.
Diets are hard, really bloody hard.
Have the NHS offered you a pre-diabetes course?
You need to find alternative foods that you enjoy, and are simple to make - not always easy.
Drink more water. And remind yourself that small steps are good. 2lb a month is nearly 2 stone a year. A year from now you could be 2 stone lighter. And this doesn't mean being hungry for a year, your body will get used to the reduced amount of food. 2 stone lighter is a great achievement, 4 stone in 2 years.
Try looking at the times you are eating. Everybody's body is different. Would you be better off eating a bigger meal at breakfast/lunch to stop you feeling faint, and a lighter meal before bed?
Is snacking a problem? What healthy, low carb food can you snack on?
Allow yourself the OCCASIONAL treat. And don't give up just because you have an off morning/day. Better to just reset and continue your good work.
And if you are being totally honest with yourself. Eating less calories than you're burning and still not shifting weight, keep a detailed and honest food diary and see your doctor. Be prepared to push and not be fobbed off.
It is bloody hard, and it's totally normal to feel as you do. But keep at it, and drink more water!