I tried to cut out a lot of upf two years ago after reading Ultra-processed people. I ate fairly well before and didn't notice much difference in health, but now my tastes have changed. So I really don't want to eat some stuff that I'd previously have enjoyed, like low quality ice cream or Coke. And if I am on holiday and eating more processed food than usual I feel horrible and bloated.
I don't feel like I've cut out any food. I've just, one by one, found alternatives that aren't upf. Eg
Bread - bought a second hand Panasonic bread maker on Facebook and use that. I don't worry about the titchy amount of emulsifer in the yeast I buy. It's really quick to chuck in the ingredients each night. But you could swap to sour dough. Pitta breads and some wraps can also be OK.
Chocolate - swapped to Montezuma (their flavoured bars aren't all upf free though.) 70% dark for many brands is the most likely to be good.
Sausages - I love them and couldn't find a perfect swap so we just buy the highest % pork ones we can find in the supermarket.
Juice - our supermarket has an orange squeezing machine so we use that. More expensive, so it's more of a treat so we drink less.
Yoghurt - swapped to Greek style. I like to mix it with lemon curd, honey or jam.
Crisps - swapped Pringles for a ready salted type that only contains potatoes and oil. Obviously they're still not a health food!
Cadbury pots of joy - I make these using a 5-minute chocolate pot recipe.
Ice-cream - swapped to a high quality brand vanilla
I didn't swap everything in one go.