This is our typical daily diet (and bear in mind we WFH so it's easy to follow this routine):
No breakfast, we generally fast until around 1pm or later.
Lunch
Raw, fibrous vegetables (usually broccoli, cauliflower, celery, radishes) with homemade mayonnaise.
Greek yoghurt with chia, flax, almonds, shredded coconut, Brazil nuts and raspberries.
NB We have the same lunch every day—I would soon get fed up if I had to cook a variety of lunches as well as dinners
Dinner
Meat or fish with green vegetables or salad. Sometimes pulses as well, or a baked potato.
Fruit in the week, good chocolate or a homemade pudding at weekends.
We'll have pasta a couple of times a month, and some bread at the weekend (where we live, cheap non-UPF bread from local bakeries is available everywhere).
Alcohol only at weekends.
Snacks tend to be things like homemade pickled eggs, cheese, nuts, celery with peanut butter in the crevice.
We're not perfect by any means. I will snack when I'm out, or doing the supermarket shop. I do find that the really bad UPFs (Pringles, Snickers etc) make me feel a bit sick now though, so I've stopped being tempted by them, but I love pastries and will overeat them given the opportunity. Again, easy and cheap to get proper, bakery-made pastries here though, so it could be worse.
We've been eating this way for about four years now. Lost over 15kg in the first year and pretty much kept it off (tend to gain a few kilos over Christmas, but it comes off again once we get back into the routine).
I will say that it wasn't a massive stretch to do this, as we were fairly low UPF before, and have always cooked from scratch (my parents were very into the 70s / 80s whole food movement, so it was normal to me). The big change we made in terms of weight loss was to practice intermittent fasting and lower carbs (we used to eat a lot of bread), and alcohol.